Freaks and Geeks (1999)

S1E1 Pilot

When Lindsay suddenly drops out of the academic decathlon team, her loved ones grow increasingly worried about her new group of friends. One of these new acquaintances steps in to guide her back to her true self. At the same time, Sam contemplates asking popular cheerleader Cindy Sanders to the upcoming homecoming dance, all while dealing with relentless harassment from a vicious bully at school.