The results of the annual survey of state teacher testing programs in 1990 are summarized. State directors of teacher testing programs were contacted in the summer of 1990 and asked to update the data compiled in 1989 by the ERIC Clearinghouse on Tests, Measurement, and Evaluation. The results show that 46 states required teacher testing in 1990. Twenty-seven states use admissions tests: 17 use only commercially available tests, 5 allow colleges of education to select tests, three use only custom designed tests, and 2 use both commercially available and custom designed tests. Thirty-six states use certification tests: 27 use only commercially available tests, 7 use only custom designed tests, and 2 use both commercially available and custom designed tests. Certification tests assess basic skills (teachers' competencies in reading, writing, and mathematics) in 26 states, professional skills (teachers' abilities to teach) in 25 states, and subject knowledge (teachers' expertise in their areas of specialization) in 24 states. A table lists, for each state, the name of the test used, passing rate, and passing scores for both admission and certification tests, where appropriate. The table includes some information on coverage area (basic, professional, and/or subject) for the certification tests. A three-item list of additional reading materials is included. (TJH)