SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13D
                    UNDER THE SECURITIES EXCHANGE ACT OF 1934

                                (AMENDMENT NO.3)*

                              GMH Communities Trust
                    -----------------------------------------
                                (Name of Issuer)

        Common Shares of Beneficial Interest, par value $0.001 per share
                    -----------------------------------------
                         (Title of Class of Securities)

                                   36188G 10 2
                                 (CUSIP Number)

                                  Joseph Macnow
                              Vornado Realty Trust
                               888 Seventh Avenue
                            New York, New York 10019
                                 (212) 894-7000
                    -----------------------------------------
            (Name, Address and Telephone Number of Person Authorized
                     to Receive Notices and Communications)

                                 With a copy to:
                                William G. Farrar
                             Sullivan & Cromwell LLP
                                125 Broad Street
                            New York, New York 10004
                                 (212) 558-4000

                                   May 2, 2006
                    -----------------------------------------
             (Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition that is the subject of this Schedule 13D, and is filing this
schedule because of ss.ss. 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the
following box [ ].

NOTE: Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 13d-7 for other parties
to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.


                         (Continued on following pages)

                              (Page 1 of 9 Pages)

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act.

---------------------------------               --------------------------------
CUSIP NO. 36188G 10 2                  13D           PAGE  2 OF 9 PAGES
---------------------------------               --------------------------------
--------------------------------------------------------------------------------
   1    NAMES OF REPORTING PERSONS.
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
               VORNADO REALTY TRUST     22-1657560
--------------------------------------------------------------------------------
   2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                (a) [_]
        (SEE INSTRUCTIONS)                                              (b) [X]
--------------------------------------------------------------------------------
   3    SEC USE ONLY

--------------------------------------------------------------------------------
   4    SOURCE OF FUNDS (SEE INSTRUCTIONS)
               WC
--------------------------------------------------------------------------------
   5    CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
        PURSUANT TO ITEM 2(d) OR 2(e)                                      [_]
--------------------------------------------------------------------------------
   6    CITIZENSHIP OR PLACE OF ORGANIZATION
               MARYLAND
--------------------------------------------------------------------------------
                    7    SOLE VOTING POWER
                              0
   NUMBER OF        ------------------------------------------------------------
    SHARES          8    SHARED VOTING POWER
 BENEFICIALLY                 9,859,138(1)
   OWNED BY         ------------------------------------------------------------
     EACH           9    SOLE DISPOSITIVE POWER
   REPORTING                  0
    PERSON          ------------------------------------------------------------
     WITH           10   SHARED DISPOSITIVE POWER
                              9,859,138(1)
--------------------------------------------------------------------------------
  11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
               9,859,138(1)
--------------------------------------------------------------------------------
  12    CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
        CERTAIN SHARES (SEE INSTRUCTIONS)                                   [X]
--------------------------------------------------------------------------------
  13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
               20.18%(2)(3)
--------------------------------------------------------------------------------
  14    TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
               OO (REAL ESTATE INVESTMENT TRUST)
--------------------------------------------------------------------------------
(1)  Consists of 1,817,247 Common Shares that Vornado Realty L.P. acquired as of
     May 2, 2006 pursuant to the automatic net exercise of a Warrant on May 2,
     2006, 7,337,857 units of limited partnership interest in GMH Communities,
     LP that may be redeemed for an equivalent number of Common Shares, 4,034
     restricted Common Shares acquired by grant in connection with Mr.
     Fascitelli's service on the Board of Trustees of GMH Communities Trust (the
     "Issuer"), which grants were approved by the Compensation Committee of the
     Issuer's Board of Trustees, and 700,000 Common Shares acquired on October
     4, 2005. Of the 7,337,857 units of limited partnership interest held,
     6,666,667 are held by Vornado Realty L.P. and 671,190 are held by Vornado
     CCA Gainesville, L.L.C. The 700,000 Common Shares are held by Vornado
     Investments L.L.C.
(2)  Based upon issuance of 1,817,247 Common Shares as of May 2, 2006 pursuant
     to the automatic net exercise of the Warrant on May 2, 2006 and assuming
     issuance 7,337,857 Common Shares that may be issued upon redemption of an
     equivalent number of units of limited partnership interest in GMH
     Communities, LP.
(3)  Based upon 39,699,843 Common Shares outstanding on October 31, 2005 as
     stated on the cover of the Issuer's Form 10-Q for the quarterly period
     ended September 30, 2005.

                               Page 2 of 9 Pages


---------------------------------               --------------------------------
CUSIP NO. 36188G 10 2                  13D           PAGE  3 OF 9 PAGES
---------------------------------               --------------------------------
--------------------------------------------------------------------------------
   1    NAMES OF REPORTING PERSONS.
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
               VORNADO REALTY L.P.      13-3925979
--------------------------------------------------------------------------------
   2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                (a) [_]
        (SEE INSTRUCTIONS)                                              (b) [X]
--------------------------------------------------------------------------------
   3    SEC USE ONLY

--------------------------------------------------------------------------------
   4    SOURCE OF FUNDS (SEE INSTRUCTIONS)
               WC
--------------------------------------------------------------------------------
   5    CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
        PURSUANT TO ITEM 2(d) OR 2(e)                                      [_]
--------------------------------------------------------------------------------
   6    CITIZENSHIP OR PLACE OF ORGANIZATION
               DELAWARE
--------------------------------------------------------------------------------
                    7    SOLE VOTING POWER

   NUMBER OF        ------------------------------------------------------------
    SHARES          8    SHARED VOTING POWER
 BENEFICIALLY                 9,859,138(1)
   OWNED BY         ------------------------------------------------------------
     EACH           9    SOLE DISPOSITIVE POWER
   REPORTING                  0
    PERSON          ------------------------------------------------------------
     WITH           10   SHARED DISPOSITIVE POWER
                              9,859,138(1)
--------------------------------------------------------------------------------
  11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
               9,859,138(1)
--------------------------------------------------------------------------------
  12    CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
        CERTAIN SHARES (SEE INSTRUCTIONS)                                   [X]
--------------------------------------------------------------------------------
  13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
               20.18%(2)(3)
--------------------------------------------------------------------------------
  14    TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
               PN
--------------------------------------------------------------------------------

(1)  Consists of 1,817,247 Common Shares that Vornado Realty L.P. acquired as of
     May 2, 2006 pursuant to the automatic net exercise of a Warrant on May 2,
     2006, 7,337,857 units of limited partnership interest in GMH Communities,
     LP that may be redeemed for an equivalent number of Common Shares and 4,034
     restricted Common Shares acquired by grant in connection with Mr.
     Fascitelli's service on the Issuer's Board of Trustees, which grants were
     approved by the Compensation Committee of the Issuer's Board of Trustees,
     and 700,000 Common Shares acquired on October 4, 2005. Of the 7,337,857
     units of limited partnership interest held, 6,666,667 are held by Vornado
     Realty L.P. and 671,190 are held by Vornado CCA Gainesville, L.L.C. The
     700,000 Common Shares are held by Vornado Investments L.L.C.
(2)  Based upon issuance of 1,817,247 Common Shares as of May 2, 2006 upon the
     automatic net exercise of the Warrant on May 2, 2006 and 7,337,857 Common
     Shares that may be issued upon redemption of an equivalent number of units
     of limited partnership interest in GMH Communities, LP.
(3)  Based upon 39,699,843 Common Shares outstanding on October 31, 2005 as
     stated on the cover of the Issuer's Form 10-Q for the quarterly period
     ended September 30, 2005.

                               Page 3 of 9 Pages


---------------------------------               --------------------------------
CUSIP NO. 36188G 10 2                  13D           PAGE  4 OF 9 PAGES
---------------------------------               --------------------------------
--------------------------------------------------------------------------------
   1    NAMES OF REPORTING PERSONS.
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
               VORNADO CCA GAINESVILLE, L.L.C.    22-3702578
--------------------------------------------------------------------------------
   2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                (a) [_]
        (SEE INSTRUCTIONS)                                              (b) [X]
--------------------------------------------------------------------------------
   3    SEC USE ONLY

--------------------------------------------------------------------------------
   4    SOURCE OF FUNDS (SEE INSTRUCTIONS)

--------------------------------------------------------------------------------
   5    CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
        PURSUANT TO ITEM 2(d) OR 2(e)                                      [_]
--------------------------------------------------------------------------------
   6    CITIZENSHIP OR PLACE OF ORGANIZATION
               DELAWARE
--------------------------------------------------------------------------------
                    7    SOLE VOTING POWER
                              671,190
   NUMBER OF        ------------------------------------------------------------
    SHARES          8    SHARED VOTING POWER
 BENEFICIALLY
   OWNED BY         ------------------------------------------------------------
     EACH           9    SOLE DISPOSITIVE POWER
   REPORTING                  671,190
    PERSON          ------------------------------------------------------------
     WITH           10   SHARED DISPOSITIVE POWER

--------------------------------------------------------------------------------
  11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
               671,190
--------------------------------------------------------------------------------
  12    CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
        CERTAIN SHARES (SEE INSTRUCTIONS)                                (1) [X]
--------------------------------------------------------------------------------
  13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
               1.66%
--------------------------------------------------------------------------------
  14    TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
               OO (LIMITED LIABILITY COMPANY)
--------------------------------------------------------------------------------

(1)  As further described under Item 3 of this Schedule 13D, Vornado CCA
     Gainesville, L.L.C. currently holds 671,190 units of limited partnership
     interest in GMH Communities, LP that became redeemable commencing November
     2, 2005, at the option of Vornado CCA Gainesville, L.L.C., for Common
     Shares at the rate of one Common Share for each Unit redeemed or, at the
     option of the Issuer, cash equal to the fair market value of one Common
     Share. Such Common Shares became beneficially owned as of September 3,
     2005.

                               Page 4 of 9 Pages


---------------------------------               --------------------------------
CUSIP NO. 36188G 10 2                  13D           PAGE  5 OF 9 PAGES
---------------------------------               --------------------------------
--------------------------------------------------------------------------------
   1    NAMES OF REPORTING PERSONS.
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
               VORNADO INVESTMENTS L.L.C.    22-3509199
--------------------------------------------------------------------------------
   2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                (a) [_]
        (SEE INSTRUCTIONS)                                              (b) [X]
--------------------------------------------------------------------------------
   3    SEC USE ONLY

--------------------------------------------------------------------------------
   4    SOURCE OF FUNDS (SEE INSTRUCTIONS)
               WC
--------------------------------------------------------------------------------
   5    CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
        PURSUANT TO ITEM 2(d) OR 2(e)                                      [_]
--------------------------------------------------------------------------------
   6    CITIZENSHIP OR PLACE OF ORGANIZATION
               DELAWARE
--------------------------------------------------------------------------------
                    7    SOLE VOTING POWER
                              700,000
   NUMBER OF        ------------------------------------------------------------
    SHARES          8    SHARED VOTING POWER
 BENEFICIALLY
   OWNED BY         ------------------------------------------------------------
     EACH           9    SOLE DISPOSITIVE POWER
   REPORTING                  700,000
    PERSON          ------------------------------------------------------------
     WITH           10   SHARED DISPOSITIVE POWER

--------------------------------------------------------------------------------
  11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
               700,000
--------------------------------------------------------------------------------
  12    CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
        CERTAIN SHARES (SEE INSTRUCTIONS)                                (1) [X]
--------------------------------------------------------------------------------
  13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
               1.76%
--------------------------------------------------------------------------------
  14    TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
               OO (LIMITED LIABILITY COMPANY)
--------------------------------------------------------------------------------

(1)  On October 4, 2005, Vornado Investments L.L.C. acquired 700,000 Common
     Shares in a public offering at a purchase price per share of $14.25.
     Vornado Investments acquired the Common Shares with working capital.

                               Page 5 of 9 Pages


Vornado Realty Trust, Vornado Realty L.P., and Vornado CCA Gainesville, L.L.C.
(collectively, the "Reporting Persons") do each hereby amend their Statement on
Schedule 13D filed with respect to the common shares of beneficial interest, par
value $0.001 per share (the "Shares"), of GMH Communities Trust, a real estate
investment trust formed under the laws of the State of Maryland (the "Issuer").
This Amendment No. 3 to Schedule 13D of the Reporting Persons ("Amendment No.
3") amends the Statement on Schedule 13D of the Reporting Persons filed on
November 10, 2004 (the "Initial Schedule 13D"), as amended by Amendment No. 1 to
Schedule 13D of the Reporting Persons filed on August 19, 2005 ("Amendment No.
1"), and as amended by Amendment No. 2 to Schedule 13D of the Reporting Persons
filed on October 12, 2005 ("Amendment No. 2" and as so amended, the "Schedule
13D"). This Amendment No. 3 amends the Schedule 13D only with respect to those
items listed below.

         Unless otherwise indicated herein, all capitalized terms used but not
defined herein shall have the meanings ascribed to them in the Initial Schedule
13D.

ITEM 3.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

         Item 3 is hereby amended by adding the following paragraph at the end
thereof:

         As of May 2, 2006, the Issuer net settled in Common Shares the Warrant
in accordance with the terms of the Warrant which provided for the automatic net
exercise of the Warrant, resulting in the issuance to Vornado Realty L.P. of
1,817,247 Common Shares.

ITEM 5.  INTEREST IN SECURITIES OF THE ISSUER.

         Item 5 is hereby amended and restated in its entirety as follows:

         (a) and (b). See the rows numbered 7, 8, 9, 10, 11 and 13 on each of
pages 2, 3, 4 and 5 above, which are incorporated herein by reference.

         To the best knowledge of the Reporting Persons, except as disclosed
herein, none of the persons listed on Schedule I beneficially own any Common
Shares.

         Each Reporting Person hereby disclaims beneficial ownership of any
shares of Common Stock held by any other Reporting Person.

         (c) Except as set forth above and as reported in this Amendment No. 3,
no transactions in the Common Shares were effected by the Reporting Persons
during the past 60 days by the Reporting Persons, or, to the best knowledge of
the Reporting Persons, any of the persons listed on Schedule I hereto during the
past 60 days.

         (d) No person is known by any Reporting Person to have the right to
receive or the power to direct the receipt of dividends from, or the proceeds
from the sale of, any of the Common Shares that may be deemed to be beneficially
owned by any Reporting Person.

         (e) Not applicable.

ITEM 7.  MATERIAL TO BE FILED AS EXHIBITS.

         Exhibit 1 - Joint Filing Agreement, dated October 6, 2005, between
         Vornado Realty Trust, Vornado Realty L.P., Vornado CCA Gainesville,
         L.L.C., and Vornado Investments, L.L.C.**

         Exhibit 2 - Warrant, dated July 27, 2004, as amended, between Vornado
         Realty L.P., GMH Communities Trust and GMH Communities LP (incorporated
         by reference to Exhibit 10.1 to the Issuer's Current Report on Form 8-K
         filed October 29, 2004 (File No. 001-32290)).*

------------------
*    Filed as an Exhibit attached to the Initial Schedule 13D.
**   Filed as an Exhibit attached to Amendment No. 2.

                               Page 6 of 9 Pages


         Exhibit 3 - Registration Rights Agreement , dated as of July 27, 2004
         by and among GMH Communities Trust, GMH Communities LP, GMH Communities
         GP, LLC, Gary M. Holloway, and Vornado Realty L.P.*

         Exhibit 4 - Amendment, dated as of November 2, 2004, to Registration
         Rights Agreement, dated as of July 27, 2004 by and among GMH
         Communities Trust, GMH Communities LP, GMH Communities GP, LLC, Gary M.
         Holloway, and Vornado Realty L.P.*

         Exhibit 5 - Letter Agreement, dated October 25, 2004, among Vornado
         Realty L.P., GMH Communities Trust, GMH Communities GP Trust, and GMH
         Communities LP.*

         Exhibit 6 - Amendment, dated as of September 27, 2005, to Registration
         Rights Agreement, dated as of July 27, 2004 by and among GMH
         Communities Trust, GMH Communities LP, GMH Communities GP, LLC, Gary M.
         Holloway, and Vornado Realty L.P. (incorporated by reference to Exhibit
         10.24 to Amendment No. 2 to the Issuer's Registration Statement on Form
         S-11 (file no. 333-128081), filed on September 28, 2005).


                               Page 7 of 9 Pages


                                   SIGNATURES

         After reasonable inquiry and to the best knowledge and belief of each
Reporting Person, each Reporting Person certifies that the information set forth
in this statement is true, complete and correct.

Date:  May 4, 2006


                                          VORNADO REALTY TRUST

                                          By:  /s/ JOSEPH MACNOW
                                             Name: Joseph Macnow
                                             Title: Executive Vice President-
                                                    Finance and Administration,
                                                    Chief Financial Officer


                                          VORNADO REALTY L.P.

                                          By: Vornado Realty Trust,
                                              Its general partner


                                          By:  /s/ JOSEPH MACNOW
                                             Name: Joseph Macnow
                                             Title: Executive Vice President-
                                                    Finance and Administration,
                                                    Chief Financial Officer


                                          VORNADO CCA
                                          GAINESVILLE, L.L.C.



                                          By: Vornado Realty L.P.,
                                              Its sole member


                                          By: Vornado Realty Trust,
                                              Its general partner


                                          By:  /s/ JOSEPH MACNOW
                                             Name: Joseph Macnow
                                             Title: Executive Vice President-
                                                    Finance and Administration,
                                                    Chief Financial Officer


                                Page 8 of 9 Pages



                                          VORNADO INVESTMENTS L.L.C.



                                          By: Vornado Realty L.P.,
                                              Its sole member


                                          By: Vornado Realty Trust,
                                              Its general partner


                                          By:  /s/ JOSEPH MACNOW
                                             Name: Joseph Macnow
                                             Title: Executive Vice President-
                                                    Finance and Administration,
                                                    Chief Financial Officer


                                Page 9 of 9 Pages