The purpose of this research was to construct an adaptive test on the computer. Adaptive testing is a new strategy of evaluation for computer-assisted learning and e-learning. Adaptive testing provides more efficient test administration and intelligent learning evaluation. It is expected to increase the accuracy of estimating the learner?s true ability with taking less appropriate selecting questions for individuals. Item response theory (IRT) is the main theoretical base to make tests adaptive and feasible. Adaptive testing requires high speed calculation to process the complicated IRT functions, which is fortunately the advantage of computers.