T.J. is a boy genius who gets bumped up from the fourth grade to high school. T.J. tries to adjust to his new life, but he shares some classes with his 14 year-old brother Marcus, the school jock, and his … Tahj Mowry, John Marshall Jones, Jason Weaver, Omar Gooding, Essence Atkins, Dann Florek, Arvie Lowe, Jr. Added on Disney 2021-07-10.