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  <xs:element id="crai_AntidilutiveSecuritiesExcludedFromComputationOfWeightedAverageNumberOfDilutedSharesOutstandingAbstract" abstract="true" name="AntidilutiveSecuritiesExcludedFromComputationOfWeightedAverageNumberOfDilutedSharesOutstandingAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="crai_ScheduleOfForgivableLoansActivityTableTextBlock" abstract="false" name="ScheduleOfForgivableLoansActivityTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="crai_AllocatedShareBasedCompensationExpenseCurrentAcceleratedVestingOfAwards" abstract="false" name="AllocatedShareBasedCompensationExpenseCurrentAcceleratedVestingOfAwards" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_CumulativeEffectPeriodOfAdoptionAxis" abstract="true" name="CumulativeEffectPeriodOfAdoptionAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="crai_StockIssuedDuringPeriodValueContingentConsiderationLiability" abstract="false" name="StockIssuedDuringPeriodValueContingentConsiderationLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_ForgivableLoansNoncurrent" abstract="false" name="ForgivableLoansNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_ForgivableLoansDisclosureTextBlock" abstract="false" name="ForgivableLoansDisclosureTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="crai_CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember" abstract="true" name="CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="crai_MoneyMarketFundsPerShareFairValueDisclosure" abstract="false" name="MoneyMarketFundsPerShareFairValueDisclosure" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="num:perShareItemType"/>
  <xs:element id="crai_CumulativeEffectPeriodOfAdoptionDomain" abstract="true" name="CumulativeEffectPeriodOfAdoptionDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="crai_AllowanceForUnbilledServices" abstract="false" name="AllowanceForUnbilledServices" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_DeferredRentExpense" abstract="false" name="DeferredRentExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_ForgivableLoansCurrent" abstract="false" name="ForgivableLoansCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_ForgivableLoansAdvances" abstract="false" name="ForgivableLoansAdvances" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_CumulativeEffectPeriodOfAdoptionAdjustmentMember" abstract="true" name="CumulativeEffectPeriodOfAdoptionAdjustmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="crai_SelfTenderOfferMember" abstract="true" name="SelfTenderOfferMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="crai_ScheduleOfNetIncomeAvailableToCommonShareholdersTableTextBlock" abstract="false" name="ScheduleOfNetIncomeAvailableToCommonShareholdersTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="crai_CountriesOtherThanUnitedStatesUnitedKingdomMember" abstract="true" name="CountriesOtherThanUnitedStatesUnitedKingdomMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="crai_NumberOfBroadAreasOfConsultingServices" abstract="false" name="NumberOfBroadAreasOfConsultingServices" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="crai_IncreaseDecreaseInObligationIncentiveCashAwards" abstract="false" name="IncreaseDecreaseInObligationIncentiveCashAwards" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_AccruedProjectCostsCurrent" abstract="false" name="AccruedProjectCostsCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_ForgivableLoansAmortization" abstract="false" name="ForgivableLoansAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_ForgivableLoanActivityRollForward" abstract="true" name="ForgivableLoanActivityRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="crai_StockIssuedDuringPeriodValueShareBasedCompensationEmployeesAndNonEmployees" abstract="false" name="StockIssuedDuringPeriodValueShareBasedCompensationEmployeesAndNonEmployees" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_DividendsShareBasedCompensationNet" abstract="false" name="DividendsShareBasedCompensationNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_CompensationAndRelatedExpensesAbstract" abstract="true" name="CompensationAndRelatedExpensesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="crai_PaymentsOfDividendsEquivalents" abstract="false" name="PaymentsOfDividendsEquivalents" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_RightOfUseAssetAmortization" abstract="false" name="RightOfUseAssetAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_ForgivableLoansTranslationAdjustments" abstract="false" name="ForgivableLoansTranslationAdjustments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_FacilityRelatedLiabilitiesNoncurrent" abstract="false" name="FacilityRelatedLiabilitiesNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_ScheduleOfBadDebtExpenseTableTextBlock" abstract="false" name="ScheduleOfBadDebtExpenseTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="crai_SelfTenderStockOfferingLineItems" abstract="true" name="SelfTenderStockOfferingLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="crai_ForgivableLoansReclassificationFromAccruedExpensesToOtherAssets" abstract="false" name="ForgivableLoansReclassificationFromAccruedExpensesToOtherAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_SelfTenderStockOfferingTable" abstract="true" name="SelfTenderStockOfferingTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
</xs:schema>
