A project was conducted to revise the list of assessment instruments that Pennsylvania Department of Education, Bureau of Adult Basic and Literacy Education (ABLE)-funded agencies are permitted to use to report learner gains. Through a mail survey, the project researched 19 standardized assessment instruments used by agencies for reporting learner gains and identified areas in which appropriate instruments were needed. Instruments that were in use and others that were identified as having potential use were examined to determine whether they met acceptability requirements. Recommendations for revising the list of acceptable instruments were submitted to the bureau. The project found that five standardized instruments--the TABE (Tests of Adult Basic Education) Survey Edition, the TABE Complete Battery, the Official GED (General Educational Development) Practice Tests, the GED Tests, and the BEST (Basic English Skills Test)--are the most popular instruments among responding agencies, and that respondents are generally satisfied with those instruments. A need was identified for standardized instruments that would supply better information on beginning-level readers, career-specific learners, and upper-level ESL (English as a Second Language) learners. (Appendixes to the report include the survey and lists of assessment instruments and publishers.) (Author/KC)