Although minimum competency testing is increasingly popular, there is presently a paucity of information on teachers' and principals' use of and attitudes toward these testing programs. Therefore, a study examined the use and perceived impact of standardized reading tests in Puerto Rico and compared these results to the results of a similar study conducted in California. After being translated into Spanish and slightly modified from a version originally used in California, 75 copies of a 43-item questionnaire were sent to 25 Puerto Rican schools to be filled out by principals and by second and fifth grade teachers. Results pointed toward four general conclusions: (1) tests are valued and extensively used by both principals and teachers in Puerto Rico; (2) province- and district-wide reading assessments in Puerto Rico primarily affect curriculum decisions, particularly on the local school level; (3) Puerto Rican teachers and principals felt that five generally accepted goals of testing programs were being met; and (4) although differences exist in the areas of test preferences and the amount of testing that is acceptable, teachers and principals in California and Puerto Rico are generally similar in their attitudes toward standardized tests. (JL)