
<PAGE>
 
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

                               (Amendment No. 14)

                   Under the Securities Exchange Act of 1934

                               Forum Group, Inc.
                               -----------------
                                (Name of Issuer)

                        Common Stock, Without Par Value
                        -------------------------------
                         (Title of Class of Securities)

                                    349841304
                                 --------------
                                 (CUSIP Number)

                              Forum Holdings, L.P.
                         4200 Texas Commerce Tower West
                                 2200 Ross Ave.
                              Dallas, Texas  75201
                         Attention:  Robert A. Whitman
                                 (214) 220-4900
                                 --------------
                 (Name, Address and Telephone Number of Person
               Authorized to Receive Notices and Communications)

                                With a copy to:

                            Robert A. Profusek, Esq.
                           Jones, Day, Reavis & Pogue
                              599 Lexington Avenue
                               New York, New York
                                 (212) 326-3939

                                March 25, 1996
                   -----------------------------------------
                      (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 which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box [ ].

Check the following box if a fee is being paid with this statement [ ].

                                 Page 1 of 17
                         Index to Exhibits on Page 13
<PAGE>
 
                                 SCHEDULE 13D

================================================================================
 
CUSIP  NO.   349841304              PAGE   2   OF  17  PAGES
           ------------                  ----     ----
================================================================================
 
           1       NAME OF REPORTING PERSON
                   S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                   
                           Forum Holdings, L.P.
- --------------------------------------------------------------------------------

           2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP      a [_]
                                                                         b [X]

- --------------------------------------------------------------------------------
                   
           3       SEC USE ONLY
                   
- --------------------------------------------------------------------------------

           4       SOURCE OF FUNDS*
                   
                           WC
- --------------------------------------------------------------------------------

           5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED 
                   PURSUANT TO ITEMS 2(d) or (e)                           [_] 
                   
- --------------------------------------------------------------------------------

           6       CITIZENSHIP OR PLACE OF ORGANIZATION
                   
                           Texas
- --------------------------------------------------------------------------------

                   7       SOLE VOTING POWER

                                   -0-
          ----------------------------------------------------------------------
 NUMBERS OF 
   SHARES   
BENEFICIALLY       8       SHARED VOTING POWER
 OWNED BY                          -0-
   EACH     
 REPORTING  --------------------------------------------------------------------
PERSON WITH  
                   9       SOLE DISPOSITIVE POWER
                                   -0-
 
          ----------------------------------------------------------------------

                  10       SHARED DISPOSITIVE POWER
                                   -0-

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

           11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
  
                           -0-
- --------------------------------------------------------------------------------

           12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES 
                   CERTAIN SHARES*                                         [12]
 
- --------------------------------------------------------------------------------
 
           13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
                          0.0%
- --------------------------------------------------------------------------------

           14      TYPE OF REPORTING PERSON*
 
                          PN
================================================================================

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
                                 SCHEDULE 13D

================================================================================
 
CUSIP  NO.   349841304              PAGE   3   OF  17  PAGES
           ------------                  ----     ----
================================================================================
 
           1       NAME OF REPORTING PERSON
                   S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                   
                           HRP Management II, Ltd.
- --------------------------------------------------------------------------------

           2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP      a [_]
                                                                         b [X]

- --------------------------------------------------------------------------------
                   
           3       SEC USE ONLY
                   
- --------------------------------------------------------------------------------

           4       SOURCE OF FUNDS*
                   
                           OO
- --------------------------------------------------------------------------------

           5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED 
                   PURSUANT TO ITEMS 2(d) or (e)                           [_] 
                   
- --------------------------------------------------------------------------------

           6       CITIZENSHIP OR PLACE OF ORGANIZATION
                   
                           Texas
- --------------------------------------------------------------------------------

                   7       SOLE VOTING POWER

                                   -0-
          ----------------------------------------------------------------------
 NUMBERS OF 
   SHARES   
BENEFICIALLY       8       SHARED VOTING POWER
 OWNED BY                          -0-
   EACH     
 REPORTING  --------------------------------------------------------------------
PERSON WITH  
                   9       SOLE DISPOSITIVE POWER
                                   -0-
 
          ----------------------------------------------------------------------

                  10       SHARED DISPOSITIVE POWER
                                   -0-

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

           11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
  
                           -0-
- --------------------------------------------------------------------------------

           12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES 
                   CERTAIN SHARES*                                         [X]
 
- --------------------------------------------------------------------------------
 
           13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
                          0.0%
- --------------------------------------------------------------------------------

           14      TYPE OF REPORTING PERSON*
 
                          PN
================================================================================

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
                                 SCHEDULE 13D

================================================================================
 
CUSIP  NO.   349841304              PAGE   4   OF  17  PAGES
           ------------                  ----     ----
================================================================================
 
           1       NAME OF REPORTING PERSON
                   S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                   
                          HH Genpar Partners
- --------------------------------------------------------------------------------

           2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP      a [_]
                                                                         b [X]

- --------------------------------------------------------------------------------
                   
           3       SEC USE ONLY
                   
- --------------------------------------------------------------------------------

           4       SOURCE OF FUNDS*
                   
                           OO
- --------------------------------------------------------------------------------

           5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED 
                   PURSUANT TO ITEMS 2(d) or (e)                           [_] 
                   
- --------------------------------------------------------------------------------

           6       CITIZENSHIP OR PLACE OF ORGANIZATION
                   
                           Texas
- --------------------------------------------------------------------------------

                   7       SOLE VOTING POWER
                                   -0-
 NUMBERS OF --------------------------------------------------------------------
   SHARES    
BENEFICIALLY       8       SHARED VOTING POWER
 OWNED BY                          -0-
   EACH   ----------------------------------------------------------------------
 REPORTING   
PERSON WITH        9       SOLE DISPOSITIVE POWER
                                   -0-
          ----------------------------------------------------------------------

                  10       SHARED DISPOSITIVE POWER
                                   -0-
- --------------------------------------------------------------------------------

           11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
  
                           -0-
- --------------------------------------------------------------------------------

           12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES 
                   CERTAIN SHARES*                                         [X]
 
- --------------------------------------------------------------------------------
 
           13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
                          0.0%
- --------------------------------------------------------------------------------

           14      TYPE OF REPORTING PERSON*
 
                          PN
================================================================================

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
                                 SCHEDULE 13D

================================================================================
 
CUSIP  NO.   349841304              PAGE    5  OF  17  PAGES
           ------------                  ----     ----
================================================================================
 
           1       NAME OF REPORTING PERSON
                   S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                   
                          Hampstead Associates, Inc.
- --------------------------------------------------------------------------------

           2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP      a [_]
                                                                         b [X]

- --------------------------------------------------------------------------------
                   
           3       SEC USE ONLY
                   
- --------------------------------------------------------------------------------

           4       SOURCE OF FUNDS*
                   
                           OO
- --------------------------------------------------------------------------------

           5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED 
                   PURSUANT TO ITEMS 2(d) or (e)                           [_] 
                   
- --------------------------------------------------------------------------------

           6       CITIZENSHIP OR PLACE OF ORGANIZATION
                   
                           Texas
- --------------------------------------------------------------------------------

                   7       SOLE VOTING POWER
                                   -0-
 NUMBERS OF --------------------------------------------------------------------
   SHARES    
BENEFICIALLY       8       SHARED VOTING POWER
 OWNED BY                          -0-
   EACH   ----------------------------------------------------------------------
 REPORTING   
PERSON WITH        9       SOLE DISPOSITIVE POWER
                                   -0-
          ----------------------------------------------------------------------

                  10       SHARED DISPOSITIVE POWER
                                   -0-
- --------------------------------------------------------------------------------

           11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
  
                           -0-
- --------------------------------------------------------------------------------

           12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES 
                   CERTAIN SHARES*                                         [X]
 
- --------------------------------------------------------------------------------
 
           13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
                          0.0%
- --------------------------------------------------------------------------------

           14      TYPE OF REPORTING PERSON*
 
                          CO
================================================================================

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
                                 SCHEDULE 13D

================================================================================
 
CUSIP  NO.   349841304              PAGE   6   OF  17  PAGES
           ------------                  ----     ----
================================================================================
 
           1       NAME OF REPORTING PERSON
                   S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                   
                          RAW Genpar, Inc.
- --------------------------------------------------------------------------------

           2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP      a [_]
                                                                         b [X]

- --------------------------------------------------------------------------------
                   
           3       SEC USE ONLY
                   
- --------------------------------------------------------------------------------

           4       SOURCE OF FUNDS*
                   
                           OO
- --------------------------------------------------------------------------------

           5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED 
                   PURSUANT TO ITEMS 2(d) or (e)                           [_] 
                   
- --------------------------------------------------------------------------------

           6       CITIZENSHIP OR PLACE OF ORGANIZATION
                   
                           Texas
- --------------------------------------------------------------------------------

                   7       SOLE VOTING POWER
                                   -0-
 NUMBERS OF --------------------------------------------------------------------
   SHARES    
BENEFICIALLY       8       SHARED VOTING POWER
 OWNED BY                          -0-
   EACH   ----------------------------------------------------------------------
 REPORTING   
PERSON WITH        9       SOLE DISPOSITIVE POWER
                                   -0-
          ----------------------------------------------------------------------

                  10       SHARED DISPOSITIVE POWER
                                   -0-
- --------------------------------------------------------------------------------

           11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
  
                           -0-
- --------------------------------------------------------------------------------

           12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES 
                   CERTAIN SHARES*                                         [X]
 
- --------------------------------------------------------------------------------
 
           13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
                          0.0%
- --------------------------------------------------------------------------------

           14      TYPE OF REPORTING PERSON*
 
                          CO
================================================================================

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
                                 SCHEDULE 13D

================================================================================
 
CUSIP  NO.   349841304              PAGE  7   OF   17  PAGES
           ------------                  ----     ----
================================================================================
 
           1       NAME OF REPORTING PERSON
                   S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                   
                          InCap, Inc.
- --------------------------------------------------------------------------------

           2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP      a [_]
                                                                         b [X]

- --------------------------------------------------------------------------------
                   
           3       SEC USE ONLY
                   
- --------------------------------------------------------------------------------

           4       SOURCE OF FUNDS*
                   
                           OO
- --------------------------------------------------------------------------------

           5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED 
                   PURSUANT TO ITEMS 2(d) or (e)                           [_] 
                   
- --------------------------------------------------------------------------------

           6       CITIZENSHIP OR PLACE OF ORGANIZATION
                   
                           Texas
- --------------------------------------------------------------------------------

                   7       SOLE VOTING POWER
                                   -0-
 NUMBERS OF --------------------------------------------------------------------
   SHARES    
BENEFICIALLY       8       SHARED VOTING POWER
 OWNED BY                          -0-
   EACH   ----------------------------------------------------------------------
 REPORTING   
PERSON WITH        9       SOLE DISPOSITIVE POWER
                                   -0-
          ----------------------------------------------------------------------

                  10       SHARED DISPOSITIVE POWER
                                   -0-
- --------------------------------------------------------------------------------

           11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
  
                           -0-
- --------------------------------------------------------------------------------

           12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES 
                   CERTAIN SHARES*                                         [X]
 
- --------------------------------------------------------------------------------
 
           13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
                          0.0%
- --------------------------------------------------------------------------------

           14      TYPE OF REPORTING PERSON*
 
                          CO
================================================================================

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
     This Amendment No. 14 amends and supplements the Statement on Schedule 13D
filed on February 11, 1993 (as heretofore amended and supplemented, the
"Schedule 13D"), by Forum Holdings, L.P., a Texas limited partnership, and
Investors Genpar, Inc., a Delaware corporation.  Capitalized terms used herein
which are not otherwise defined herein are so used with the respective meanings
ascribed to them in the Schedule 13D.

Item 4.  Purpose of Transaction.
         ---------------------- 

     Item 4 is hereby amended by adding the following paragraphs following the
last paragraph thereof:

          On February 15, 1996, the Company entered into an Agreement and Plan
     of Merger (the "Merger Agreement") with Marriott International, Inc., a
     Delaware corporation ("Parent"), and FG Acquisition Corp., an Indiana
     Corporation ("Purchaser").  In connection with the execution and delivery
     of the Merger Agreement, Forum Holdings entered into an Agreement and
     Irrevocable Proxy, dated as of February 15, 1996 (as amended, the
     "Holdings/Marriott Agreement"), with Parent, Purchaser and the Company and
     an amendment thereto dated as of March 21, 1996 (the "Holdings/Marriott
     Amendment").  Pursuant to the Merger Agreement, on February 23, 1996 the
     Purchaser commenced a tender offer ("Offer") to purchase all of the
     outstanding shares of Common Stock at a purchase price of $13.00 per share,
     net to the seller in cash without interest thereon.

          Pursuant to the Offer and the Holdings/Marriott Agreement, (i) Forum
     Holdings sold to Purchaser (a) all of the 9,075,251 outstanding shares of
     Common Stock previously beneficially owned by Forum Holdings (b) all of the
     Warrants and Special Warrants previously beneficially owned by Forum
     Holdings and (ii) and the Investor Warrants were cancelled.

          The foregoing response to this Item 4 is qualified in its entirety by
     reference to the Merger Agreement, the Holdings/Marriott Agreement and the
     Holdings/Marriott Amendment, the full texts of which are filed as Exhibits
     18, 19 and 20, respectively, hereto and incorporated herein by this
     reference.

Item 5.  Interest in Securities of the Issuer.
         ------------------------------------ 

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

          The responses to Items 3, 4 and 6 are incorporated herein by this
     reference.

          As a result of the purchase of shares of Common Stock pursuant to the
     Offer and the consummation of the other transactions contemplated by the
     Holdings/Marriott

                                      -8-
<PAGE>
 
     Agreement, as of March 25, 1996 Forum Holdings ceased to beneficially own
     any shares of Common Stock.

Item 6.  Contracts, Arrangements, Understandings or Relationships
         --------------------------------------------------------
         With Respect to Securities of the Issuer.
         ----------------------------------------

          The responses to Items 4 and 5 are incorporated herein by this
     reference.

Item 7.  Material to be Filed as Exhibits.
         -------------------------------- 

          Exhibit 18 -   Merger Agreement (incorporated by reference to Exhibit
                         1 to the Solicitation/Recommendation Statement on
                         Schedule 14D-9 filed on behalf of the Company with the
                         Securities and Exchange Commission on February 23,
                         1996)

          Exhibit 19 -   Holdings/Marriott Agreement (incorporated by reference
                         to Exhibit 10 to the Solicitation/Recommendation
                         Statement on Schedule 14D-9 filed on behalf of the
                         Company with the Securities and Exchange Commission on
                         February 23, 1996)
 
          Exhibit 20 -   Holdings/Marriott Amendment

                                      -9-
<PAGE>
 
                                   SIGNATURES

     After reasonable inquiry and to the best of its knowledge and belief, the
undersigned certifies that the information set forth in this statement is true,
complete and correct and agrees that this statement may be filed collectively
with HRP Management II, Ltd., HH Genpar Partners, Hampstead Associates, Inc.,
RAW Genpar, Inc. and InCap, Inc.

     Dated:  April 1, 1996.
                                    FORUM HOLDINGS, L.P.


                                    By: /s/ Troy B. Lewis
                                        -----------------------
                                        Troy B. Lewis,
                                        Attorney-in-Fact/*/


          After reasonable inquiry and to the best of its knowledge and belief,
the undersigned certifies that the information set forth in this statement is
true, complete and correct and agrees that this statement may be filed
collectively with Forum Holdings, L.P., HH Genpar Partners, Hampstead
Associates, Inc., RAW Genpar, Inc. and InCap, Inc.

     Dated:  April 1, 1996.
                                    HRP MANAGEMENT II, LTD.


                                    By: /s/ Troy B. Lewis
                                        ----------------------
                                        Troy B. Lewis,
                                        Attorney-in-Fact/**/

- --------------------
 /*/  Pursuant to a Power of Attorney executed on behalf of Forum Holdings, L.P.
      and filed previously as Exhibit 12 hereto.

/**/  Pursuant to a Power of Attorney executed on behalf of HRP Management II,
      Ltd. and filed previously as Exhibit 12 hereto.

                                      -10-
<PAGE>
 
          After reasonable inquiry and to the best of its knowledge and belief,
the undersigned certifies that the information set forth in this statement is
true, complete and correct and agrees that this statement may be filed
collectively with Forum Holdings, L.P., HRP Management II, Ltd., Hampstead
Associates, Inc., RAW Genpar, Inc. and InCap, Inc.

          Dated:  April 1, 1996.
                                    HH GENPAR PARTNERS


                                    By: /s/ Troy B. Lewis
                                        -----------------
                                        Troy B. Lewis,
                                        Attorney-in-Fact/*/



          After reasonable inquiry and to the best of its knowledge and belief,
the undersigned certifies that the information set forth in this statement is
true, complete and correct and agrees that this statement may be filed
collectively with Forum Holdings, L.P., HRP Management II, Ltd., HH Genpar
Partners, RAW Genpar, Inc. and InCap, Inc.

          Dated:  April 1, 1996.


                                    HAMPSTEAD ASSOCIATES, INC.



                                    By: /s/ Troy B. Lewis
                                        -----------------
                                        Troy B. Lewis,
                                        Attorney-in-Fact/**/

- --------------------
 /*/  Pursuant to a Power of Attorney executed on behalf of HH Genpar Partners
      and filed previously as Exhibit 12 hereto.

/**/  Pursuant to a Power of Attorney executed on behalf of Hampstead
      Associates, Inc. and filed previously as Exhibit 12 hereto.

                                      -11-
<PAGE>
 
          After reasonable inquiry and to the best of its knowledge and belief,
the undersigned certifies that the information set forth in this statement is
true, complete and correct and agrees that this statement may be filed
collectively with Forum Holdings, L.P., HRP Management II, Ltd., HH Genpar
Partners, Hampstead Associates, Inc. and InCap, Inc.

          Dated:  April 1, 1996.


                                    RAW GENPAR, INC.



                                    By: /s/ Troy B. Lewis
                                        -----------------
                                        Troy B. Lewis,
                                        Attorney-in-Fact/*/



          After reasonable inquiry and to the best of its knowledge and belief,
the undersigned certifies that the information set forth in this statement is
true, complete and correct and agrees that this statement may be filed
collectively with Forum Holdings, L.P., HRP Management II, Ltd., HH Genpar
Partners, Hampstead Associates, Inc. and RAW Genpar, Inc.

          Dated:  April 1, 1996.


                                    INCAP, INC.



                                    By:   /s/ Troy B. Lewis
                                         ------------------
                                        Troy B. Lewis,
                                        Attorney-in-Fact/**/

- --------------------
 /*/  Pursuant to a Power of Attorney executed on behalf of RAW Genpar, Inc.
      and filed previously as Exhibit 12 hereto.

/**/  Pursuant to a Power of Attorney executed on behalf of  InCap, Inc.
      and filed previously as Exhibit 12 hereto.

                                      -12-
<PAGE>
 
                               INDEX TO EXHIBITS
                               -----------------
<TABLE>
<CAPTION>
 
 
 Exhibit             Description
- ---------  --------------------------------
<S>        <C>
   18      Merger Agreement (incorporated
           by reference to Exhibit 1 to
           the Solicitation/Recommendation
           Statement on Schedule 14D-9
           filed on behalf of the Company
           with the Securities and
           Exchange Commission on February
           23, 1996)

   19      Holdings/Marriott Agreement
           (incorporated by reference to
           Exhibit 10 to the
           Solicitation/Recommendation
           Statement on Schedule 14D-9
           filed on behalf of the Company
           with the Securities and
           Exchange Commission on February
           23, 1996)

   20      Holdings/Marriott Amendment
 
</TABLE>

                                      -13-
