"Smart Guy" 1999

Synopsis:

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 clueless and self-absorbed 16 year-old sister Yvette.

Cast:
Tahj Mowry
Tahj Mowry
T.J. Henderson 
John Marshall Jones
John Marshall Jones
Floyd Henderson 
Jason Weaver
Jason Weaver
Marcus Henderson 
Omar Gooding
Omar Gooding
Morris L. 'Mo' Tibbs 
Essence Atkins
Essence Atkins
Yvette Henderson