Revealing: During several of the driving sequences, the teenager in the driver's seat turns the steering wheel - but the rear screen projection keeps the car "moving" in a straight line. And it's particularly ironic in light of the movie's "big message" that the students here bear no resemblance to real-life teenagers in any real school. They're all slim, trim, athletic and model-gorgeous, as well as all-too-obviously not teenagers at all. (Because US child labor laws severely restrict the hours that underage actors can work, many films "cheat" by having youthful 20-somethings play the teens.)

Visible crew/equipment: When William Shatner's character first enters the classroom, the boom mike is hanging completely into the frame at the top of the screen, and can be seen sweeping to the left as the students take their seats. (This is visible in both aired-on-TV and DVD versions.).