A report on tests used by California undergraduate institutions and by graduate and professional schools is presented by the California Postsecondary Education Commission. Information is provided on five tests used by undergraduate colleges: the Preliminary Scholastic Aptitude Test/National Merit Scholarship Qualifying Test, the Scholastic Aptitude Test, College Board Achievement Tests, the American College Test, and the Test of English as a Foreign Language. Also covered are four tests used by graduate and professional schools: the Graduate Record Examinations, the Graduate Management Admission Test, the Law School Admission Test, and the Medical College Admission Test. In addition to describing the tests, information is included on: mean scores by ethnicity and sex, percentages of examinees achieving scaled score levels, and percentile rank ranges by subject area tested. For each test, information is provided by the testing agency on: the beginning and ending dates of the testing year, total times the test was taken during the testing year, and direct expenses for the testing program categorized by type of expense. The text of California Senate Bill 1758 concerning postsecondary education and standardized tests is appended. (SW)