This study aims at comparing the difficulty levels, discrimination powers and powers of testing achievement of multiple choice tests and true-false tests, and thus revealing the rightness or wrongness of the commonly believed hypothesis that multiple choice tests don't bear the same properties as true-false tests. The research was performed with 252 fourth year students studying for a degree in teaching in the 2007-2008 academic year. This is a descriptive study. The research data were obtained through a 100-item test of 50 multiple-choice and 50 True-False questions, which were prepared as equivalent, and given at the end of semesters. And the data were analyzed through the SPSS programmed. The research results are significant in that they show that true-false tests are not easier than multiple-choice ones, and that probable success stemming from the test structure does not contribute significantly to the difference in general. (Contains 4 tables.)