The history and rationale for entry and exit tests devised to meet Pennsylvania's standards for certifying foreign language teachers are outlined and discussed. The involvement of the Educational Testing Service in developing and validating tests in a variety of subject areas is described, and the need for institutional rather than standardized tests for language certification, because of differing curricula, is discussed. Controversy spawned by requiring the tests and problems arising from test construction and administration are examined. Pennsylvania's standards for language teacher education program approval and teacher certification, test specifications, and guidelines for test performance evaluation are appended. (MSE)