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          <BusinessNameLine1Txt>Lee Rubenstein</BusinessNameLine1Txt>
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        <BusinessName>
          <BusinessNameLine1Txt>Edward Batchelder</BusinessNameLine1Txt>
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        <BusinessName>
          <BusinessNameLine1Txt>Michael Dumbroski</BusinessNameLine1Txt>
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          <BusinessNameLine1Txt>Scott Dunn</BusinessNameLine1Txt>
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          <BusinessNameLine1Txt>Edward Fagin</BusinessNameLine1Txt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Steve Magoun</BusinessNameLine1Txt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 4a Severance or change-of-control payment</FormAndLineReferenceDesc>
        <ExplanationTxt>A severance payment was made to Tena Zara ($124,990) in Calendar Year 2016.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 5a Compensation contingent on revenues of the organization</FormAndLineReferenceDesc>
        <ExplanationTxt>BONUSES WERE DEPENDENT ON ORGANIZATION GOALS WITH REVENUE AND NET EARNINGS AS COMPONENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 6a Compensation contingent on net earnings of the organization</FormAndLineReferenceDesc>
        <ExplanationTxt>BONUSES WERE DEPENDENT ON ORGANIZATION GOALS WITH REVENUE AND NET EARNINGS AS COMPONENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part II COMPENSATION FROM AN UNRELATED ORGANIZATION OR INDIVIDUAL</FormAndLineReferenceDesc>
        <ExplanationTxt>NAME - MANALI BETTENDORF, COMPENSATION FROM UNRELATED ORGANIZATION - 25425.000000, NAME OF UNRELATED ORGANIZATION - NEXTSOURCE, INC., TYPE OF COMPENSATION - SERVICES</ExplanationTxt>
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    </IRS990ScheduleJ>
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        <FormAndLineReferenceDesc>Form 990, Part VI, Line 6 Classes of members or stockholders</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SOLE MEMBERS OF THE ORGANIZATION ARE THE PRESIDENT AND FELLOWS OF HARVARD COLLEGE (HARVARD) AND THE MASSACHUSETTS INSTITUTE OF TECHNOLOGY (MIT).</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 7a Members or stockholders electing members of governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>AS SET FORTH IN THE BYLAWS, EDX'S GOVERNING BODY (BOARD OF TRUSTEES) IS COMPOSED OF AN EQUAL NUMBER OF PERSONS APPOINTED BY ITS TWO MEMBERS, HARVARD AND MIT (IN ADDITION TO THE EDX CEO WHO SERVES AS AN EX-OFFICIO MEMBER OF THE BOARD).</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 7b Decisions requiring approval by members or stockholders</FormAndLineReferenceDesc>
        <ExplanationTxt>AS SET FORTH IN THE BYLAWS, THE FOLLOWING POWERS ARE RESERVED TO THE MEMBERS: (I) DETERMINATION OF THE SIZE OF THE BOARD OF TRUSTEES; (II) ELECTION, SUSPENSION, OR REMOVAL OF THE PRESIDENT AND, IF DIFFERENT, THE CHIEF EXECUTIVE OFFICER; AND (III) DETERMINATION OF WHETHER A THIRD PARTY'S EDUCATIONAL OR INFORMATIONAL CONTENT WILL BE MADE ACCESSIBLE THROUGH THE ORGANIZATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 11b Review of form 990 by governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>MEMBERS OF EDX'S SENIOR MANAGEMENT REVIEW THE FORM 990. FOLLOWING THAT REVIEW AND BEFORE THE FORM 990 IS FILED, EDX'S AUDIT COMMITTEE IS PROVIDED THE FORM FOR REVIEW, COMMENT, AND APPROVAL.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 12c Conflict of interest policy</FormAndLineReferenceDesc>
        <ExplanationTxt>The questionnaire and POLICIES REQUIRE THAT COVERED INDIVIDUALS ANNUALLY ACKNOWLEDGE IN WRITING THAT THEY ARE AWARE OF THE POLICY AND IDENTIFY ANY RELATIONSHIPS OR RESPONSIBILITIES THAT HAVE THE POTENTIAL OF PRODUCING CONFLICTS OF INTEREST. EACH YEAR, DISCLOSURE FORMS ARE DISTRIBUTED TO THOSE COVERED BY THESE POLICIES. IF A RESPONSE REVEALS A CONFLICT OR POTENTIAL CONFLICT, SUCH CONFLICT IS REFERRED TO THE APPROPRIATE INDIVIDUAL OR BODY FOR CONSIDERATION AND MANAGEMENT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15a Process to establish compensation of top management official</FormAndLineReferenceDesc>
        <ExplanationTxt>EDX HAS A COMPENSATION COMMITTEE THAT REVIEWS THE SALARIES OF THE PRESIDENT, KEY EMPLOYEES AND OTHER OFFICERS. THE COMPENSATION REVIEW PROCESS INCLUDES INDUSTRY BENCHMARKING WITH BOTH ACADEMIC AND TECHNOLOGY SALARIES IN THE LOCAL AREA OF CAMBRIDGE, MA.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15b Process to establish compensation of other employees</FormAndLineReferenceDesc>
        <ExplanationTxt>EDX HAS A COMPENSATION COMMITTEE THAT REVIEWS THE SALARIES OF THE PRESIDENT, KEY EMPLOYEES AND OTHER OFFICERS. THE COMPENSATION REVIEW PROCESS INCLUDES INDUSTRY BENCHMARKING WITH BOTH ACADEMIC AND TECHNOLOGY SALARIES IN THE LOCAL AREA OF CAMBRIDGE, MA.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 19 Required documents available to the public</FormAndLineReferenceDesc>
        <ExplanationTxt>EDX'S GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS ARE AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Column (D)</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION RECEIVES GENEROUS DONATIONS TO SUPPORT THE MISSION BUT DOES NOT ACTIVELY ENGAGE IN FUNDRAISING.</ExplanationTxt>
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        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g Other Fees</FormAndLineReferenceDesc>
        <ExplanationTxt>Recruiting - Total Expense: 139599, Program Service Expense: 118567, Management and General Expenses: 21032, Fundraising Expenses: ; Marketing &amp; Business Development - Total Expense: 3336486, Program Service Expense: 2833815, Management and General Expenses: 502671, Fundraising Expenses: ; Engineering - Total Expense: 1940664, Program Service Expense: 1648286, Management and General Expenses: 292378, Fundraising Expenses: ; Educational Support Services - Total Expense: 1444313, Program Service Expense: 1226714, Management and General Expenses: 217599, Fundraising Expenses: ; Architecture &amp; Design - Total Expense: 364, Program Service Expense: 309, Management and General Expenses: 55, Fundraising Expenses: ; Hosting - Total Expense: 619335, Program Service Expense: 526027, Management and General Expenses: 93308, Fundraising Expenses: ; Temporary Help - Total Expense: 473813, Program Service Expense: 402429, Management and General Expenses: 71384, Fundraising Expenses: ; Other - Total Expense: 644789, Program Service Expense: 547645, Management and General Expenses: 97144, Fundraising Expenses: ;</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, Part VI, Line 2 - BUSINESS RELATIONSHIP</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOLLOWING CURRENT OFFICERS/DIRECTORS OF EDX, INC. ARE EMPLOYED BY MIT, OF WHICH ISRAEL RUIZ IS AN OFFICER AND DIRECTOR - MARTIN SCHMIDT AND SANJAY SARMA. THE FOLLOWING CURRENT OFFICERS/DIRECTORS OF EDX, INC. ARE EMPLOYED BY HARVARD, OF WHICH KATHERINE LAPP IS AN OFFICER AND DIRECTOR - JEFF BUSSGANG, ALAN GARBER AND MICHAEL SMITH. ADDITIONALLY, ISRAEL RUIZ AND ALAN SPOON ARE MEMBERS OF THE BOARD AT FORTIVE CORPORATION.</ExplanationTxt>
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    </IRS990ScheduleO>
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        <EIN>042103580</EIN>
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      <GiftGrntOrCapContriToOthOrgInd>false</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>true</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>true</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</LoansOrGuaranteesFromOthOrgInd>
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