If we were to make a survey on which of the major activities that a classroom teacher likes the least, we are almost certain that a great majority will answer-the making of tests, the correction of examination papers, the computation of grades, all parts of the general term evaluation of instruction. Why? Because the process of evaluating instruction is not only tedious but also difficult. But evaluation is inevitable in classroom teaching. We simply can't get away from it. Besides, it is a very important aspect in the whole teaching process.