The major objective of the Carroll County Competency Based Teacher Certification (CBTC) Project is the development of a system for the recertification of teachers with classroom experience. A major goal is the development of a model for the identification and measurement of teacher competency areas; and the assessment of the extent to which these teacher behaviors (competencies) affect student outcomes, and the extent to which they relate to school goals and objectives. The certification process involves several stages including a screening procedure, classroom observations by trained observers in natural settings, and a study of certain relationships outside the classroom. Collection of student outcome data is used during the developmental stages, not as a basis for individual teacher certification. The overall plan involves several steps including (a) establishment of a competency list and related teacher behaviors and student outcomes, (b) selection of appropriate classroom behavior and student growth measures, (c) data collection in on-going classrooms, (d) reduction of observation data to competency-related scores, and (e) examining relationships between observed competencies and student growth. Replication of these steps successfully in additional classrooms will provide a validation of the findings and confirmation that some competencies were measurable and resulted in student growth. This in turn would provide a set of measurable teacher competencies that could be used as part of the certification process. (RC)