Beat the Teacher
Superb quiz show which aired as part of Children's BBC on BBC1 between 1984 and 1988 and hosted first by Howard Stableford (1st series), then Paul Jones (2nd & 3rd series) and finally Bruno Brookes (4th & 5th series).
The show, devised by Clive Doig (who had previously created the hits Jigsaw and Puzzle Trail), pitted a school pupil against a teacher. To level the playing field, the questions were typically of a lateral-thinking or trick type (e.g. "What is the simplest thing you could look at to see the back of your neck?"). Correct answers earned between one and four moves on a mechanical noughts-and-crosses board, where each square had a revolving block in it which revolved to show X-(blank)-O-(blank). It was therefore important to remember which symbol was due to come up next on the currently-blank squares. Points were scored by creating lines of your symbol, with a bonus for filling the entire board (after which it was randomised).
The series ran during the autumn term, four days a week for between six and eight weeks.