My Three Sons (1960)

S3E10 Steve Gets An 'A'

Robbie has a date instead of working on his term paper. Mike hands him a copy of a paper that Steve wrote, which earned an 'A'. Thinking he can get away with it, Robbie submits the copied work, only to receive an 'F'. When Steve learns about this, he confronts the teacher and discovers that the paper was plagiarized. Now feeling humiliated, Steve must break the news to Robbie about why he failed.