Background and Aim: Achievement-based evaluation is an important part of the educational planning process, in which learners are screened; besides, it helps teachers in their self-evaluation. The purpose of present study is to survey the methods through which laboratory sciences students were evaluated by their professors at Tehran University of Medical Sciences(TUMS) in the academic year 2009-2010.

Materials and Methods: In this cross-sectional study, the population consisted of the faculty members who teach laboratory sciences courses. Data collection instrument was a researcher-made questionnaire. The collected data were analyzed to describe all evaluation methods using tables and necessary distribution frequencies. Then, the results were compared with those of Medical Planning Council resolutions.

Results: The results show that mid-term exams were used for the evaluation of students in 35% of all theoretical and practical courses. Besides, of the evaluation methods used, multiple-choice questions occupied the first rank(70%) among the methods normally employed.

Conclusion: According to the results, routine evaluation of undergraduate students of laboratory sciences at the Paramedical Faculty of Tehran University of Medical sciences not only conformed to the ratifications of the Supreme Council of Medical Planning, but also was done more extensively and with a higher degree of consistency in the academic year 2009-2010.