Welcome Back, Kotter (1975)

S2E16 Kotter and Son

Gabe's father, known for his harsh judgments, pays a visit and expresses skepticism about his son's career choice. To assess Gabe's teaching skills firsthand, he decides to accompany him to school, where he observes Gabe interacting with his rowdy class, the Sweathogs. Throughout the day, tensions rise as Gabe seeks to prove his worth as an educator while navigating his father's critical eye.