As a basketball player at Plainfield High School, Sears finished with historical numbers of 1,048 points and 1,063 rebounds. He became the second player in school history to record over 1,000 in each category. In his sophomore season, Sears helped Plainfield make a postseason run, and in turn, drew the attention of colleges. As his junior season came to a close, he began receiving offers from
NCAA Division I schools. As a senior, Sears averaged 13.4 points, 12.0 rebounds and 3.2 blocks, and he garnered first team all-state, all-area and all-county accolades. During his time with Plainfield, he led his team to two
New Jersey State Interscholastic Athletic Association (NJSIAA) Group III titles. He also appeared in the NJSIAA
Tournament of Champions championship game two times, losing to
St. Anthony High School on both occasions. ==College career==