The examination has always been considered as an extremely important part of the educative process. It has been considered that the examination trends to develop mental powers which are use in everyday life. These mental powers include attention, judgements, volition , reasoning, self- reliance, verification and other intellectual powers. Achievement test aim to measure the pupils achievement as a result of instruction in a given subject. It shares the limitations with respect to outcomes that can not be measured like the interest, appreciation , ability to think critically or even the efficiency of the procedure used by the pupil in getting answers. Thus the title: "Determinants in enhancing elementary grade school pupils' performance in their achievement test"