 Originally, the premise of the series was that Edna Garrett, the  housekeeper on _"Diffrent Strokes" (1978)_ (qv), became the  headmistress at the school that Kimberly Drummond  (Dana Plato (qv)) attended. But after the pilot episode, the  producers decided to keep Plato on _"Diffrent Strokes" (1978)_ (qv)  and there was never any mention of Kimberly being a student at  Eastland again.