Before it was a single season wonder on The Disney Channel and way before it became a stalwart on NBC Saturday mornings as Saved by the Bell, Good Morning, Miss Bliss had an aired pilot in summer 1987, with a different focus compared to the later series and an entirely different cast of students, which is a who's who of known actors.  A little retooling, then a little more retooling after the Disney era, and you got a beloved part of the childhoods of most every current 40-something.