Early prediction of students' performance is important in identification and providing remedial help to academically weaker students. At the Singapore Institute of Technology, an online learning platform in Mathematics is available to the students three months before official classes start. Through the online platform, students will learn and recall the fundamental mathematical knowledge needed for their Mathematics courses. There are also tests that students take before reviewing the online materials (pre-test), after reviewing each topic (topical tests) and after reviewing all the materials (post-test). Here, we report that the topical tests and post-test scores from the online platform are predictive of students' performances in their first year Mathematics courses.