Ranked #13 of 24 in Season 12•matches the season avg
Katie decides to put the triplets in a nursery school during the day when she fills in for a friend as a secretary, a move that enrages Uncle Charley when he hears about it. Later, it becomes apparent that he goes missing every afternoon causing
Fred MacMurray
Steve Douglas
Don Grady
Robbie Douglas
Stanley Livingston
Chip Douglas
Barry Livingston
Ernie Thompson
William Demarest
Charley O'Casey
Beverly Garland
Barbara
Tina Cole
Katie
Dawn Lyn
Dodie Harper Douglas
Earl Bellamy
Director
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"Three for School" is episode 14 of My Three Sons season 12. It scored 6.7/10 from 50 votes, ranking #13 of 24 episodes this season (season average 6.7). Directed by Earl Bellamy, it aired on January 20, 1972.