Performance-based teacher certification in Georgia is centered on: criterion-referenced tests, and on-the-job assessment procedures for student teachers and beginning teachers. A state-funded contract was awarded to develop teacher certification tests, resulting in a 250-item pool and 15 criterion-referenced tests for 32 teaching fields. Cutting scores were derived from information supplied by Georgia experts who reviewed test items for minimum content knowledge/competence. Five instruments were developed and tested: Teaching Plans and Materials, Classroom Procedures, Interpersonal Skills, Professional Standards, and Pupil Perceptions. Master teachers were trained as data collectors. Performance based certification will be implemented in 1980, through the establishment of a statewide network of regional assessment centers. Full implementation of the program will be phased in: administration of appropriate teaching-field criterion referenced tests; assessment of student-teaching performance by college supervisors and classroom supervising teachers; and conversion of nonrenewable teaching certificates to renewable certificates through satisfactory on-the-job performance as measured by the Teacher Performance Assessment Instruments: Beginning Teacher Form. (MH)