Mrs. Whitfield, who appears at the end of the episode, was in fact the actual on-set teacher for the child actors. She is recreated in one scene in the feature "The Brady Bunch Movie".
When Mike and Sam are at the market, the policeman tells them they need a permit to charge admission. Since the play is on a Saturday, city offices would be closed so they would have either had to do it Friday or wait until Monday.
The only Season Five episode in which Jan is seen wearing glasses.
The Brady kids stand-ins are all in the audience . You can notice if you look carefully when they pan the audience, especially Cindy's stand-in at the front right, with the pigtails.
This episode is currently not available on streaming due to either music rights or naming rights that belong to Disney.