Barely visible in the back corner in the classroom scenes is actress Ronne Troup, who would play Polly in later seasons. She was closer to age in real life to Don Grady, who played Robbie, but her character would marry Chip (Stanley Livingston).
Future Peyton Place TV series star Christopher Connelly, who would play sibling Norman to Ryan O'Neal's Rodney Harrington, once more appears as one of Robbie's regular classmates.