Dragnet (1967)

S04E06 Juvenile - The Little Pusher

Title: Juvenile - The Little Pusher Plot: Joe and Bill, members of the Juvenile Narcotics Division, encounter a 12-year-old boy who is high on drugs. In response, they visit the boy's school to educate the teachers on recognizing signs of narcotic use. While investigating further, they uncover that a ninth grader is distributing the drugs on campus, tracing the supply back to the boy’s father, who is the original source.