Performance evaluation is one of the important components of each organization, and educational organizations are not the exceptions. Teachers are believed by many researchers as the single most important factor influencing student academic success or failure. Therefore, they need to be at the center of attempts to improve or reform the educational system of any country. Considering the pivotal role of teachers, educational systems need to be assured that teachers perform their best to enhance student learning, and also they should try to improve by identifying the strengths and weaknesses of teachers' practice for further professional development. The present study tries to examine the effectiveness of the current teacher evaluation system in Iran from EFL teachers’ perspectives. For that matter, a survey consisting of both Likert-scaled and open-ended questions was developed based on theoretical underpinnings of purposes for teacher evaluation, experts’ views, and the purposes of foreign language education as stated by the National Curriculum. 423 English language teachers were asked to answer the questions included in the survey. The results indicated the current teacher evaluation system did not contribute to teacher professional development nor could it assure teacher accountability. The results of the study as well as the requirements for developing an alternative model for EFL teacher evaluation are discussed