SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                            -----------------------

                                    FORM 8-K

                                 CURRENT REPORT


                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934


       Date of Report (Date of earliest event reported):    September 2, 1999
                                                            -----------------


                             GRC INTERNATIONAL, INC.
             -----------------------------------------------------
             (Exact name of registrant as specified in its charter)


Delaware                             1-7517                   95-2131929
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(State of                    (Commission File Number)       (I.R.S. Employer
Incorporation)                                              Identification No.)


                    1900 Gallows Road, Vienna, Virginia 22182
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                (Address of principal executive office) (Zip Code)


                                 (703) 506-5000
                         ------------------------------
                         (Registrant's telephone number)

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Item 2.  Acquisition or Disposition of Assets
         ------------------------------------

On September 2, 1999, GRC International,  Inc. ("GRC") completed its acquisition
of Management  Consulting & Research,  Inc. ("MCR") pursuant to the terms of the
Agreement and Plan of Merger,  (the "Merger  Agreement"),  dated as of August 5,
1999, by and among GRC, Dr. Gerald McNichols,  MAC Merger Corporation ("MAC"), a
wholly owned  subsidiary of GRC, and MCR, a copy of which is filed as an exhibit
hereto and  incorporated  by  reference  herein.  The gross  purchase  price was
approximately  $27 million,  consisting of 2,000,000 shares of Common Stock, par
value $0.10 per share, of GRC issued to McNichols,  valued at approximately  $16
million,  and  approximately  $11  million  in cash.  The net cash  payment  was
approximately  $7 million,  and the net  purchase  price was  approximately  $23
million, as a result of approximately $4 million of MCR cash being used to pay a
portion of the acquisition price.

GRC paid the  approximately  $7 million of cash with funds on hand obtained from
its normal business operations and borrowings under it's current line of credit.

The  acquisition  was effected  through the merger of MCR with and into MAC (the
"Merger").  As a result of the Merger,  MCR became a wholly-owned  subsidiary of
GRC International, Inc.

In  connection  with the  Merger,  Dr.  Gerald  McNichols  also  entered  into a
noncompetition agreement with GRC and MCR and an indemnification  agreement with
GRC,  MAC  and  MCR,  copies  of  which  are  filed  as an  exhibit  hereto  and
incorporated by reference herein.

Further details regarding the merger can be found in the press releases filed as
exhibits hereto and incorporated by reference herein.


Item 7.  Financial Statements and Exhibits.
         ---------------------------------

         (a)  and  (b).  The  financial   statements  and  pro  forma  financial
         information, required as part of this report on Form 8-K, will be filed
         not later than 60 days from  September 18, 1999 as an amendment to this
         report.

         (c).  The following exhibits are filed as part of this report:

         Exhibit No.       Description
         ----------        -----------

         2.1      Agreement  and Plan of Merger,  dated as of August 5, 1999, by
                  and among GRC International,  Inc., Dr. Gerald McNichols,  MAC
                  Merger Corporation and Management Consulting & Research, Inc.

         99.1     Press Release dated August 6, 1999

         99.2     Press Release dated September 2, 1999

         99.3     Noncompetition  Agreement,  dated as of September 1, 1999,  by
                  and among GRC  International,  Inc.,  Management  Consulting &
                  Research, Inc. and Dr. Gerald McNichols.

                                       2
<PAGE>

         99.4     Indemnification  Agreement,  dated as of September 1, 1999, by
                  and among GRC  International,  Inc.,  MAC Merger  Corporation,
                  Management   Consulting  &  Research,   Inc.  and  Dr.  Gerald
                  McNichols.


Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf of the
undersigned hereunto duly authorized.

                              GRC INTERNATIONAL, INC.


Date:    September 17, 1999   By: /s/ Thomas E. McCabe
                                 -----------------------------------------------
                                 Thomas E. McCabe
                                 Senior Vice President, Director of Corporate
                                   Development, General Counsel & Secretary