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        <Explanation>JEFFREY BEARD: HOUSING - $19,438; TRANSPORTATION - $11,663; SETTLING ALLOWANCE - $6,000; RELOCATION ALLOWANCE - $17,008 DANIEL BENHAM: HOUSING - $10,450; SETTLING ALLOWANCE - $6,000 SIVA DATLA KUMARI: HOUSING - $37,629; TRANSPORTATION - $4,375 HANS VERMEULEN: TRANSPORTATION - $19,993 JUDITH FABIAN: HOUSING - $13,884; TRANSPORTATION - $8,330; SETTLING ALLOWANCE - $6,000 CAROLYN ADAMS: TRANSPORTATION - $9,620 JUDITH GUY: HOUSING - $24,384; TRANSPORTATION - $4,045; SEVERANCE - $42,675 DREW DEUTSCH: HOUSING ALLOWANCE - $48,211; TRANSPORTATION - $4,375; SETTLING ALLOWANCE - $6,000; PARKING - $10,900 ADRIAN KEARNEY: HOUSING - $16,661; TRANSPORTATION - 8,330 IAN CHAMBERS: HOUSING - $14,476; SETTLING ALLOWANCE - 5,419 Luz Maria Guttierrez-Vittini: HOUSING - $137,458; TRANSPORTATION - $4,045; SEVERANCE - $42,675 RALPH CLINE: HOUSING - $47,298; TRANSPORTATION - $6,250; SETTLING ALLOWANCE - $6,000; PARKING - $10,083 ERIC LAUZON: HOUSING - $30,654 PROSPERPHINA DHLAMINI-FISCHER: SEVERANCE- $93,729 ANTHONY TAIT: HOUSING -$49,590, SETTLING IN ALLOWANCE- $6,000, PARKING- $8,882</Explanation>
      </Form990ScheduleJPartIII>
      <Form990ScheduleJPartIII>
        <Identifier>Schedule J, Part I, Line 4a</Identifier>
        <Explanation>JUDITH GUY RECEIVED A SEVERANCE PAYMENT IN 2011 IN THE AMOUNT OF $42,675. LUZ MARIA GUTTIERREZ-VITTINI RECEIVED A SEVERANCE PAYMENT IN 2011 IN THE AMOUNT OF $42,675. PROSPERPHINA DHLAMINI-FISCHER RECEIVED A SEVERANCE PAYMENT IN 2011 IN THE AMOUNT OF $93,729. THESE INDIVIDUALS WERE CURRENT EMPLOYEES FOR A PORTION OF 2011 AND SEPARATED FROM THE ORGANIZATION DURING THE 2011 TAX YEAR.</Explanation>
      </Form990ScheduleJPartIII>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <GeneralExplanation>
        <Identifier>Form 990, Part III, Line 4d</Identifier>
        <Explanation>The organization received $2,426,093 of income from the sale of publications and an additional $150,211 of miscellaneous income which were both related to the organization's exempt function.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Financial Statements</Identifier>
        <ReturnReference>Form 990, Part IV Question 12 &amp; Part XI Question 2</ReturnReference>
        <Explanation>The International Baccalaureate Organization (IBO) is an independent not-for-profit organization registered in Switzerland, and functions in accordance with the Swiss Civil Code. The financial statements of IBO, as audited by an independent accountant, are prepared in accordance with the Swiss Civil Code.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Process Used to Review Form 990</Identifier>
        <ReturnReference>Form 990, Part, VI, Line 11B</ReturnReference>
        <Explanation>The form 990 is prepared by the organization's independent tax accountant, Ernst &amp; Young, LLP. The 990 is then reviewed and signed off by International Baccalaureate Organization's (IBO's) Management. Policies and procedures are in the process of being implemented to circulate the IBO's Form 990 to the IBO board prior to filing it with the IRS.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Description of Process to Monitor Transactions for Conflicts of Interest</Identifier>
        <ReturnReference>Form 990, Part VI, Question 12c</ReturnReference>
        <Explanation>IB Governance Department includes the Conflicts of Interest Policy in the package of each new Board member, presents it during the induction session, asks for a signed copy of the register when he or she joins the Board and regularly updates the registers. Also, the Chair discusses any potential conflicts at the beginning of each Board meeting, according to the items on the agenda of that meeting.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Determining compensation of the Directors or top management officials</Identifier>
        <ReturnReference>Form 990, Part VI, Question 15a and 15b</ReturnReference>
        <Explanation>The human resource (HR) committee (which is a committee of the Board) deliberates on and decides the Director General's salary in the first instance and reviews it annually. These decisions are documented. The HR committee uses benchmarking data, independent views from consultants are obtained and an external expert sits on the HR committee. Then, the Director General, with delegated authority by and in collaboration with the HR committee, decides the salaries of the folllowing officers and key employees: Deputy director general, academic officer, Chief Financial Officer, HR director, advancement director, director of assessment operations, and chief operating officer schools division. These decisions are also documented.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Avail of Gov Docs, Conflict of Interest Policy, &amp; Fin Stmts to Gen Public</Identifier>
        <ReturnReference>Form 990, Part VI, Question 19</ReturnReference>
        <Explanation>IBO makes its financial statements available to the general public by mailing out its annual review to all IB World Schools and to all IB donors as well as by posting its financial statements on the IBO website, http://www.ibo.org. The conflict of interest policy is made available on the IBO website. However, the governing documents are made available to the public upon request.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Compensation</Identifier>
        <ReturnReference>Form 990, Part VII, Section A</ReturnReference>
        <Explanation>Certain individuals are not U.S. residents or U.S. employees; therefore, the compensation information for these individuals is provided using the best information available from the W-2 equivalent.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Other Changes in Net Assets</Identifier>
        <ReturnReference>Form 990, Part XI, Line 5</ReturnReference>
        <Explanation>The change in net assets is due to an unrealized currency exchange loss in the amount of $1,772,517 and a prior period IFRS reporting adjustment in the amount of $1,281,577.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>HOURS DEVOTED FOR RELATED ORGANIZATION</Identifier>
        <ReturnReference>FORM 990 PART VII</ReturnReference>
        <Explanation>NAME:Jeffrey Beard TITLE:Director General HOURS:1</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>HOURS DEVOTED FOR RELATED ORGANIZATION</Identifier>
        <ReturnReference>FORM 990 PART VII</ReturnReference>
        <Explanation>NAME:Daniel Benham TITLE:Chief Financial Officer HOURS:1</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>HOURS DEVOTED FOR RELATED ORGANIZATION</Identifier>
        <ReturnReference>FORM 990 PART VII</ReturnReference>
        <Explanation>NAME:Siva Kumari TITLE:COO Schools Division HOURS:1</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>HOURS DEVOTED FOR RELATED ORGANIZATION</Identifier>
        <ReturnReference>FORM 990 PART VII</ReturnReference>
        <Explanation>NAME:Drew Deutsch TITLE:Director Americas HOURS:1</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>OTHER EXPENSES</Identifier>
        <ReturnReference>FORM 990 PART IX</ReturnReference>
        <Explanation>DESCRIPTION:SERVICE CHARGES TOTAL EXPENSES:37084781 PROGRAM SERVICES:37084781</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>OTHER EXPENSES</Identifier>
        <ReturnReference>FORM 990 PART IX</ReturnReference>
        <Explanation>DESCRIPTION:EXAMINER FEES TOTAL EXPENSES:17297560 PROGRAM SERVICES:11935316 MANAGEMENT AND GENERAL:5362244</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>OTHER EXPENSES</Identifier>
        <ReturnReference>FORM 990 PART IX</ReturnReference>
        <Explanation>DESCRIPTION:EXCHANGE RATE LOSS TOTAL EXPENSES:218389 PROGRAM SERVICES:218389</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>OTHER EXPENSES</Identifier>
        <ReturnReference>FORM 990 PART IX</ReturnReference>
        <Explanation>DESCRIPTION:OTHER TOTAL EXPENSES:2146232 PROGRAM SERVICES:1480901 MANAGEMENT AND GENERAL:665331</Explanation>
      </GeneralExplanation>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="IRS990ScheduleR">
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>International Baccalaureate Org (UK) LTD</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressForeign>
          <AddressLine1>Peterson House Malthouse Ave</AddressLine1>
          <City>Cardiff Gate</City>
          <ProvinceOrState>Wales</ProvinceOrState>
          <Country>UK</Country>
          <PostalCode>CF23 8GL</PostalCode>
        </AddressForeign>
        <PrimaryActivities>Support IBO</PrimaryActivities>
        <LegalDomicileForeignCountry>UK</LegalDomicileForeignCountry>
        <ExemptCodeSection>N/A</ExemptCodeSection>
        <PublicCharityStatus>N/A</PublicCharityStatus>
        <DirectControllingEntityName>
          <BusinessNameLine1>IBO</BusinessNameLine1>
        </DirectControllingEntityName>
        <ControlledOrg>true</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
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        </NameOfDisregardedEntity>
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          <AddressLine1>Peterson House Malthouse Ave</AddressLine1>
          <City>Cardiff Gates</City>
          <ProvinceOrState>Wales</ProvinceOrState>
          <Country>UK</Country>
          <PostalCode>CF23 8GL</PostalCode>
        </AddressForeign>
        <PrimaryActivities>Support IBO</PrimaryActivities>
        <LegalDomicileForeignCountry>UK</LegalDomicileForeignCountry>
        <ExemptCodeSection>N/A</ExemptCodeSection>
        <PublicCharityStatus>N/A</PublicCharityStatus>
        <DirectControllingEntityName>
          <BusinessNameLine1>IBO</BusinessNameLine1>
        </DirectControllingEntityName>
        <ControlledOrg>true</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>International Baccalaureate Fund Canada</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressForeign>
          <AddressLine1>1661 West 2nd Ave Ste 202</AddressLine1>
          <City>Vancouver</City>
          <ProvinceOrState>BC</ProvinceOrState>
          <Country>CA</Country>
          <PostalCode>V6J</PostalCode>
        </AddressForeign>
        <PrimaryActivities>Support IBO</PrimaryActivities>
        <LegalDomicileForeignCountry>CA</LegalDomicileForeignCountry>
        <ExemptCodeSection>N/A</ExemptCodeSection>
        <PublicCharityStatus>N/A</PublicCharityStatus>
        <DirectControllingEntityName>
          <BusinessNameLine1>IBO</BusinessNameLine1>
        </DirectControllingEntityName>
        <ControlledOrg>true</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>IB Fund US Inc</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>7501 WISCONSIN AVE</AddressLine1>
          <City>Bethesda</City>
          <State>MD</State>
          <ZIPCode>20814</ZIPCode>
        </AddressUS>
        <EIN>680551183</EIN>
        <PrimaryActivities>Support IBO</PrimaryActivities>
        <LegalDomicileState>NY</LegalDomicileState>
        <ExemptCodeSection>501(C)(3)</ExemptCodeSection>
        <PublicCharityStatus>11, Type 1</PublicCharityStatus>
        <DirectControllingEntityName>
          <BusinessNameLine1>IBO</BusinessNameLine1>
        </DirectControllingEntityName>
        <ControlledOrg>true</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>IB Publishing Limited</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressForeign>
          <AddressLine1>Peterson House Malthouse Avenue</AddressLine1>
          <City>Cardiff Gate</City>
          <ProvinceOrState>Wales</ProvinceOrState>
          <Country>UK</Country>
          <PostalCode>CF23 8GL</PostalCode>
        </AddressForeign>
        <PrimaryActivity>Sales</PrimaryActivity>
        <LegalDomicileForeignCountry>UK</LegalDomicileForeignCountry>
        <DirectControllingEntityName>
          <BusinessNameLine1>IBO</BusinessNameLine1>
        </DirectControllingEntityName>
        <TypeOfEntity>N/A</TypeOfEntity>
        <ShareOfTotalIncome>147935</ShareOfTotalIncome>
        <ShareOfEOYAssets>5002648</ShareOfEOYAssets>
        <PercentageOwnership>1.00000</PercentageOwnership>
      </Form990ScheduleRPartIV>
      <ReceiptOfIntAnnRentsRoyalties>false</ReceiptOfIntAnnRentsRoyalties>
      <GiftGrantOrCapContrToOtherOrg>false</GiftGrantOrCapContrToOtherOrg>
      <GiftGrantOrCapContrFrOtherOrg>false</GiftGrantOrCapContrFrOtherOrg>
      <LoansOrGuaranteesToOtherOrg>false</LoansOrGuaranteesToOtherOrg>
      <LoansOrGuaranteesFromOtherOrg>false</LoansOrGuaranteesFromOtherOrg>
      <SaleOfAssetsToOtherOrg>false</SaleOfAssetsToOtherOrg>
      <PurchaseOfAssetsFromOtherOrg>false</PurchaseOfAssetsFromOtherOrg>
      <ExchangeOfAssets>false</ExchangeOfAssets>
      <RentalOfFacilitiesToOtherOrgs>false</RentalOfFacilitiesToOtherOrgs>
      <RentalOfFacilitiesFrOtherOrgs>false</RentalOfFacilitiesFrOtherOrgs>
      <PerformOfServicesForOtherOrgs>true</PerformOfServicesForOtherOrgs>
      <PerformOfServicesByOtherOrgs>true</PerformOfServicesByOtherOrgs>
      <SharingOfFacilities>false</SharingOfFacilities>
      <SharingOfPaidEmployees>true</SharingOfPaidEmployees>
      <ReimbursementPaidToOtherOrg>true</ReimbursementPaidToOtherOrg>
      <ReimbursementPaidByOtherOrg>true</ReimbursementPaidByOtherOrg>
      <OtherTransferToOtherOrg>true</OtherTransferToOtherOrg>
      <OtherTransferFromOtherOrg>true</OtherTransferFromOtherOrg>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>IBO (UK) LIMITED</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>O</TransactionType>
        <AmountInvolved>17757489</AmountInvolved>
        <MethodOfAmtDetermination>FMV</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>IBO (UK) LIMITED</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>P</TransactionType>
        <AmountInvolved>19059074</AmountInvolved>
        <MethodOfAmtDetermination>FMV</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
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          <BusinessNameLine1>IBO (UK) LIMITED</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>Q</TransactionType>
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        <MethodOfAmtDetermination>FMV</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
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        </NameOfOtherOrganization>
        <TransactionType>R</TransactionType>
        <AmountInvolved>38968819</AmountInvolved>
        <MethodOfAmtDetermination>FMV</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
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          <BusinessNameLine1>IB Publishing Limited</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>L</TransactionType>
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        <MethodOfAmtDetermination>FMV</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
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        </NameOfOtherOrganization>
        <TransactionType>O</TransactionType>
        <AmountInvolved>1355924</AmountInvolved>
        <MethodOfAmtDetermination>FMV</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
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        </NameOfOtherOrganization>
        <TransactionType>P</TransactionType>
        <AmountInvolved>1030560</AmountInvolved>
        <MethodOfAmtDetermination>FMV</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
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        </NameOfOtherOrganization>
        <TransactionType>R</TransactionType>
        <AmountInvolved>3306283</AmountInvolved>
        <MethodOfAmtDetermination>FMV</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
    </IRS990ScheduleR>
  </ReturnData>
</Return>