The purpose of this study was to demonstrate the effectiveness of web-based homework (WBH) assignments on the overall comprehension measured by the final examination in a first year college algebra course. This study included 1653 students over a three year period. Results indicate a strong correlation between achievement on the WBH assignments and achievement in the final examination. In addition, the scores of WBH assignments can be used as a good predictor of final examination scores. Our results are independent of instructors taught the course. (Contains 4 figures.)