One day, Mr. Keene called all the students and teachers together and said, This is a fine, fine schoolFrom now on, lets have school on Saturdays too.And then there was more.School all weekend.School on the holidays.School in the SUMMER What was next . . . SCHOOL AT NIGHT?So its up to Tillie to show her well-intentioned principal, Mr. Keene, that even though his fine, fine school is a wonderful place, its not fine, fine to be there all the time.