A rapid growth in the number of Web courses has been reported in education as the Internet draws attention from the community. However, it should be noted that quality is more important than quantity in education. We need to emphasize on developing and distributing high quality Web materials to achieve high level of excellence in teaching and learning. This paper first addresses the issue of Web courseware evaluation and then analyzes techniques used in current Web courses and proposes technical requirements to improve the quality. Lastly, we show the results of visiting the Edunet, the largest educational site funded by the government, assessing the Web materials designed for elementary students, and propose what needs to be done to improve the quality.