<?xml version="1.0" encoding="us-ascii"?>
<!--XBRL document created by GIM iX https://www.dfinsolutions.com/  using Fujitsu Interstage XWand-->
<schema targetNamespace="http://www.williamblairfunds.com/20230428" elementFormDefault="qualified" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:wbf="http://www.williamblairfunds.com/20230428" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2020-01-21">
  <annotation>
    <appinfo>
      <link:linkbaseRef xlink:type="simple" xlink:href="wbf-20230428_pre.xml" xlink:title="Presentation Links, all" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="wbf-20230428_cal.xml" xlink:title="Calculation Links, all" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="wbf-20230428_def.xml" xlink:title="Definition Links, all" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="wbf-20230428_lab.xml" xlink:title="Label Links, all" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DocumentDocumentandEntityInformationElements000000" id="httpwwwwilliamblairfundscomroleDocumentDocumentandEntityInformationElements000000">
        <link:definition>000000 - Document - Document and Entity Information {Elements}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairGrowthFund000021" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairGrowthFund000021">
        <link:definition>000021 - Disclosure - Risk/Return Detail Data {Elements} - William Blair Growth Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/ScheduleAnnualFundOperatingExpenses000021" id="httpwwwwilliamblairfundscomroleScheduleAnnualFundOperatingExpenses000021">
        <link:definition>000021 - Schedule - Annual Fund Operating Expenses</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairLargeCapGrowthFund000041" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairLargeCapGrowthFund000041">
        <link:definition>000041 - Disclosure - Risk/Return Detail Data {Elements} - William Blair Large Cap Growth Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairMidCapGrowthFund000061" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairMidCapGrowthFund000061">
        <link:definition>000061 - Disclosure - Risk/Return Detail Data {Elements} - William Blair Mid Cap Growth Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairMidCapValueFund" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairMidCapValueFund">
        <link:definition>000081 - Disclosure - Risk/Return Detail Data {Elements} - William Blair Mid Cap Value Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairSmall-MidCapCoreFund000101" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairSmallMidCapCoreFund000101">
        <link:definition>000101 - Disclosure - Risk/Return Detail Data {Elements} - William Blair Small-Mid Cap Core Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairSmall-MidCapGrowthFund000121" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairSmallMidCapGrowthFund000121">
        <link:definition>000121 - Disclosure - Risk/Return Detail Data {Elements} - William Blair Small-Mid Cap Growth Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairSmallCapGrowthFund000141" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairSmallCapGrowthFund000141">
        <link:definition>000141 - Disclosure - Risk/Return Detail Data {Elements} - William Blair Small Cap Growth Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairSmallCapValueFund000161" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairSmallCapValueFund000161">
        <link:definition>000161 - Disclosure - Risk/Return Detail Data {Elements} - William Blair Small Cap Value Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairGlobalLeadersFund000181" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairGlobalLeadersFund000181">
        <link:definition>000181 - Disclosure - Risk/Return Detail Data {Elements} - William Blair Global Leaders Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairInternationalLeadersFund000201" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairInternationalLeadersFund000201">
        <link:definition>000201 - Disclosure - Risk/Return Detail Data {Elements} - William Blair International Leaders Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairInternationalGrowthFund000221" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairInternationalGrowthFund000221">
        <link:definition>000221 - Disclosure - Risk/Return Detail Data {Elements} - William Blair International Growth Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairInstitutionalInternationalGrowthFund000241" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairInstitutionalInternationalGrowthFund000241">
        <link:definition>000241 - Disclosure - Risk/Return Detail Data {Elements} - William Blair Institutional International Growth Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairInternationalSmallCapGrowthFund000261" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairInternationalSmallCapGrowthFund000261">
        <link:definition>000261 - Disclosure - Risk/Return Detail Data {Elements} - William Blair International Small Cap Growth Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairEmergingMarketsLeadersFund000281" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairEmergingMarketsLeadersFund000281">
        <link:definition>000281 - Disclosure - Risk/Return Detail Data {Elements} - William Blair Emerging Markets Leaders Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairEmergingMarketsGrowthFund000301" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairEmergingMarketsGrowthFund000301">
        <link:definition>000301 - Disclosure - Risk/Return Detail Data {Elements} - William Blair Emerging Markets Growth Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairEmergingMarketsexChinaGrowthFund000321" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairEmergingMarketsexChinaGrowthFund000321">
        <link:definition>000321 - Disclosure - Risk/Return Detail Data {Elements} - William Blair Emerging Markets ex China Growth Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairEmergingMarketsSmallCapGrowthFund000341" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairEmergingMarketsSmallCapGrowthFund000341">
        <link:definition>000341 - Disclosure - Risk/Return Detail Data {Elements} - William Blair Emerging Markets Small Cap Growth Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairChinaGrowthFund000361" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairChinaGrowthFund000361">
        <link:definition>000361 - Disclosure - Risk/Return Detail Data {Elements} - William Blair China Growth Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairEmergingMarketsDebtFund000381" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairEmergingMarketsDebtFund000381">
        <link:definition>000381 - Disclosure - Risk/Return Detail Data {Elements} - William Blair Emerging Markets Debt Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.williamblairfunds.com/role/DisclosureRiskReturnDetailDataElementsWilliamBlairMidCapValueFundDuplicate" id="httpwwwwilliamblairfundscomroleDisclosureRiskReturnDetailDataElementsWilliamBlairMidCapValueFundDuplicate">
        <link:definition>010091 - Disclosure - Risk/Return Detail Data {Elements} - William Blair Mid Cap Value Fund (Duplicate)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </appinfo>
  </annotation>
  <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <import namespace="http://xbrl.sec.gov/rr/2021" schemaLocation="https://xbrl.sec.gov/rr/2021/rr-2021.xsd" />
  <import namespace="http://xbrl.sec.gov/dei/2021" schemaLocation="https://xbrl.sec.gov/dei/2021/dei-2021.xsd" />
  <import namespace="http://www.xbrl.org/dtr/type/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd" />
  <element name="S000008594Member" id="wbf_S000008594Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="RussellThreeThousandMember" id="wbf_RussellThreeThousandMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="SAndPFiveHundredMember" id="wbf_SAndPFiveHundredMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023523Member" id="wbf_C000023523Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023524Member" id="wbf_C000023524Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000211716Member" id="wbf_C000211716Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000008601Member" id="wbf_S000008601Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="RussellThousandGrowthMember" id="wbf_RussellThousandGrowthMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023538Member" id="wbf_C000023538Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023539Member" id="wbf_C000023539Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000211719Member" id="wbf_C000211719Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000010050Member" id="wbf_S000010050Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="RussellMidcapOneMember" id="wbf_RussellMidcapOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000027836Member" id="wbf_C000027836Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000027837Member" id="wbf_C000027837Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000211724Member" id="wbf_C000211724Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000075391Member" id="wbf_S000075391Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000234386Member" id="wbf_C000234386Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000234387Member" id="wbf_C000234387Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000066499Member" id="wbf_S000066499Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="RussellTwothousandFiveHundredTmMember" id="wbf_RussellTwothousandFiveHundredTmMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000214491Member" id="wbf_C000214491Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000214492Member" id="wbf_C000214492Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000008603Member" id="wbf_S000008603Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="Russell2500TMGrowthIndexMember" id="wbf_Russell2500TMGrowthIndexMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="RussellOneMember" id="wbf_RussellOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023542Member" id="wbf_C000023542Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023543Member" id="wbf_C000023543Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000211721Member" id="wbf_C000211721Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000008602Member" id="wbf_S000008602Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="RussellTwoThousandGrowthOneMember" id="wbf_RussellTwoThousandGrowthOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023540Member" id="wbf_C000023540Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023541Member" id="wbf_C000023541Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000211720Member" id="wbf_C000211720Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000008597Member" id="wbf_S000008597Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="RussellTwoThousandValueOneMember" id="wbf_RussellTwoThousandValueOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023531Member" id="wbf_C000023531Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023532Member" id="wbf_C000023532Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000211717Member" id="wbf_C000211717Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000019315Member" id="wbf_S000019315Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="MsciAllOneMember" id="wbf_MsciAllOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000053607Member" id="wbf_C000053607Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000053608Member" id="wbf_C000053608Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000053609Member" id="wbf_C000053609Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000037763Member" id="wbf_S000037763Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="MsciAllCountryWorldExUsImiMember" id="wbf_MsciAllCountryWorldExUsImiMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000116468Member" id="wbf_C000116468Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000116469Member" id="wbf_C000116469Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000116470Member" id="wbf_C000116470Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000008604Member" id="wbf_S000008604Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="MsciAllCountryWorldExUsImiOneMember" id="wbf_MsciAllCountryWorldExUsImiOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023544Member" id="wbf_C000023544Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023545Member" id="wbf_C000023545Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000211722Member" id="wbf_C000211722Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000008605Member" id="wbf_S000008605Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023546Member" id="wbf_C000023546Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000008595Member" id="wbf_S000008595Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="MsciAllCountryWorldExUsSmallCapIndexMember" id="wbf_MsciAllCountryWorldExUsSmallCapIndexMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023525Member" id="wbf_C000023525Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023526Member" id="wbf_C000023526Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023527Member" id="wbf_C000023527Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000021052Member" id="wbf_S000021052Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="MsciEmergingMarketsIndexMember" id="wbf_MsciEmergingMarketsIndexMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000088850Member" id="wbf_C000088850Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000059867Member" id="wbf_C000059867Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000059868Member" id="wbf_C000059868Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000008596Member" id="wbf_S000008596Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="MsciEmergingMarketsImiMember" id="wbf_MsciEmergingMarketsImiMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023528Member" id="wbf_C000023528Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023529Member" id="wbf_C000023529Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000023530Member" id="wbf_C000023530Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000075390Member" id="wbf_S000075390Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000234384Member" id="wbf_C000234384Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000234385Member" id="wbf_C000234385Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000034349Member" id="wbf_S000034349Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="MsciEmergingMarketsSmallCapIndexMember" id="wbf_MsciEmergingMarketsSmallCapIndexMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000105754Member" id="wbf_C000105754Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000105753Member" id="wbf_C000105753Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000105755Member" id="wbf_C000105755Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000072753Member" id="wbf_S000072753Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="MsciChinaOneMember" id="wbf_MsciChinaOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000229252Member" id="wbf_C000229252Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000229253Member" id="wbf_C000229253Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000069167Member" id="wbf_S000069167Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="JpmorganEmergingMarketsBondIndexGlobalDiversifiedMember" id="wbf_JpmorganEmergingMarketsBondIndexGlobalDiversifiedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000221009Member" id="wbf_C000221009Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000221008Member" id="wbf_C000221008Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="S000028811Member" id="wbf_S000028811Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000088322Member" id="wbf_C000088322Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element name="C000088323Member" id="wbf_C000088323Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
</schema>
