[[abstract]]After class remedial learning is normal for junior highs in Taiwan. However, the problems occur that after cream learning neither provides students with adaptive remediation, nor provides parents with children’s current learning performance. This project intends to solve above problems by developing an “online learning performance analyses and adaptive remediation with repetitive drills system”. Such a system includes an item pool database, a testing interface, a learning performance analyzing module, a learning weak-point diagnostic system, and an adaptive repetitive drills system. This system is designed to be customable, therefore the applications of this online system are not limited in junior high schools, but also other levels of educational institutes, cream schools, educational material publishers, and even, larger corporations with training department. Finally, this system may also be value-added in B2B, B2C, and C2C environments.