Test disclosure legislation in New York State (LaValle Act) has had a major impact on the national testing programs administered by Educational Testing Services (ETS) for various sponsoring organizations. The paper reviews the immediate operational effects of test disclosure in the following areas: (1) increase in number of test forms developed; (2) acceleration of development of new equating methods; and (3) filing requirements and interpretive materials. Possible future changes in national testing programs also discussed are: impact of altering one of the basic conditions of testing; broadening input to the testing process; and changes in the nature of tests. (Author/BW)