<PAGE>
EXHIBIT 5.1
Wolf, Block, Schorr and Solis-Cohen LLP
1650 Arch Street, 22nd Floor
Philadelphia, PA 19103
November 21, 2000
Opinion Research Corporation
23 Orchard Road
Skillman, New Jersey 08558
Re: Registration Statement on Form S-3
----------------------------------
Gentlemen:
As counsel for Opinion Research Corporation, a Delaware corporation (the
"Company"), we have assisted in the preparation of a Registration Statement on
Form S-3 (the "Registration Statement") in connection with the proposed offer
and sale, from time to time, of up to 1,176,458 issued and outstanding shares of
the Company's Common Stock, $0.01 par value (the "Registered Common Stock"),
including 1,068,065 shares owned by LLR Equity Partners, L.P. and 108,393 shares
owned by LLR Equity Partners Parallel, L.P.
In connection therewith, we have examined the originals or copies,
certified or otherwise identified to our satisfaction, of such records,
instruments, documents and matters of law as we have deemed necessary or
appropriate for the purpose of rendering this opinion.
In our examination of documents, instruments and other papers, we have
assumed the genuineness of all signatures on original and certified documents
and the conformity to original and certified documents of all copies submitted
to us as conformed, photostatic or other copies. As to matters of fact which
have not been independently established, we have relied upon representations of
officers of the Company.
Based upon the foregoing, it is our opinion that the 1,176,458 shares of
Registered Common Stock have been legally issued and are fully paid and non-
assessable.
We hereby consent to the reference to our firm in the Registration
Statement under the caption "Legal Opinions" in the prospectus constituting a
part thereof and to the inclusion of this opinion as an exhibit to the
Registration Statement. In giving this consent, we do not hereby admit that we
come within the category of persons whose consent is required under Section 7 of
the Securities Act of 1933, as amended, or the rules or regulations thereunder.
Very truly yours,
/s/ Wolf, Block, Schorr and Solis-Cohen LLP
Wolf, Block, Schorr and Solis-Cohen LLP
