EXHIBIT 5

                               December 20, 1996

CUC International Inc.
707 Summer Street
Stamford, CT  06901

Ladies and Gentlemen:

     I refer to the Registration Statement (the "Registration Statement") on
Form S-4 being filed by CUC International Inc. ("CUC") under the Securities Act
of 1933, as amended (the "Securities Act") with the Securities and Exchange
Commission (the "Commission"), relating to the registration of up to 3,472,785
shares of common stock par value $.01 per share of CUC (the "Shares") to be
issued to the shareholders of Knowledge Adventure, Inc. ("Knowledge") in
connection with the merger of CUC's wholly owned subsidiary, K.A. Acquisition
Corp. ("Merger Sub"), into and with Knowledge, all as set forth in the Agreement
and Plan of Merger dated October 11, 1996, among CUC, Knowledge and Merger Sub
(as amended, the "Merger Agreement").

     I have examined copies of (i) the Registration Statement; (ii) the Restated
Certificate of Incorporation and By-Laws of the Company, each as amended to
date; (iii) certain resolutions of the Board of Directors of the Company
relating to the issuance of the Shares pursuant to the terms of the Merger
Agreement; and (iv) the Merger Agreement.  I have also examined originals,
photostatic or certified copies, of such records of the Company, certificates of
officers of the Company and of public officials and such other documents as I
have deemed relevant and necessary as the basis for the opinions set forth
below.  In such examinations, I have assumed the genuineness of all signatures,
the authenticity of all documents submitted to me as originals, the conformity
to original documents of all copies submitted to me as certified, conformed or
photostatic copies, and the authenticity of all originals of such copies.

     Based upon the foregoing, I am of the opinion that the issuance of the
Shares has been duly authorized by CUC and that the Shares, when issued and
delivered to the Shareholders of Knowledge in accordance with the Merger
Agreement, will be validly issued, fully paid, and non-assessable.

     I hereby consent to the filing of this opinion with the Commission as an
Exhibit to the Registration Statement and to the reference to the undersigned
under the caption "Legal Matters" in the Registration Statement.

                                        Very truly yours,

                                        ROBERT T. TUCKER