摘要：This study was aimed at (1) developing a valid and reliable performance evaluation instruments for teachers, and (2) evaluating the level of Physics, Biology and Chemistry teachers of senior high schools who have been certified and received theprofession allowance. The population of this study included all certified Physics, Biology and Chemistry teachers of senior high schools who have received profession allowance in Banda Aceh, Aceh Besar, and Pidie. The construct validity of the instrument developed was assessed through factor analysis, and the reliability was estimated by using Cronbach’s Alpha formula. The level of teachers’performance was analyzed by the percentage. The result of the research shows that (1) the instrument developed consists of 33 items, and has an internal consistency reliability coefficient of 0,953, (2) not all certified high school teachers who have received profession allowance and teach Physics, Biology and Chemistry show high performance, and (3) the performance of Chemistry teachers is relatively higher than that of Physics and Biology teachers.Keywords: evaluation, teachers’ performance, validity, reliability
