The Assessments of Performance in Teaching (APT), presented here, is a classroom teacher performance evaluation procedure mandated by the South Carolina Legislature for all student and first year teachers, and will be implemented in 1982. Aiming to measure minimal competence, the instrument addresses five performance dimensions: planning; instruction; classroom management; communication; attitude. Each dimension is measured through eight to eleven dichotomous (yes/no) observational statements, selected through a content validity survey of South Carolina educators as being essential observable and relevant indicators of teaching competence. The teacher is allowed to prepare specific lessons which enable him to demonstrate ability to perform at such levels; the lessons are then observed on three occasions by different observers. The assessment is a composite of the three observer ratings. Each skill required by every dimension must be satisfactorily demonstrated to successfully complete the APT. Teacher demographic information, observation schedules, observation data, and lesson plans are documented on specially designed data collection sheets. As a result of the field test, standards will be validated or revised before final implementation. (Author/AEF)