Trivia / Head of the Class
- The Danza: Billy Connolly as Billy MacGregor.
- Dawson Casting: Dan Schneider was born in 1966. You do the math.
- Tony O'Dell was born in 1960. Dan Frischman, playing one of the students, was born in 1959, making him 27 years old when the series began.
- Basically most of the cast other than Tannis Vallely (Janice), who was the first one to leave (she was really smart).
- TV Guide commented on this when they featured the finale on its cover, saying it was nice to see a bunch of 30-year-olds graduate.
- Permanent Placeholder: Mr. Moore, a substitute teacher, becomes the permanent teacher of the advanced history class during the Mid-Season Twist.
- Written by Cast Member: "Will The Real Arvid Engen Please Stand Up?" was the first writing credit for Messrs. Robbins and Schneider. It would definitely not be the last.