Every school I went to....
Well, both of them, has had

1) A teacher who was sacked from a previous job for some act of Psychopathery which resulted in either the death or serious injury of a pupil

2) A teacher who was gay, and would bum you in a particular store cupboard or other

3) A teacher (always a lady) who has previously come in at some point with a mini skirt and no undies on, giving an entire class an eyeful

4) A lesbian teacher who would do the female equivalent of bum the girls, again this always happened in a specific cupboard

5) A teacher who had made a pupil pregnant

These were treated as gospel by all and inspired genuine lusts/fear (delete where applicable) amongst the entire population.

There may be more ludicrous teacher myths, will post as they come to me.
(tinypod will never learn. Ever., Sun 1 Feb 2009, 12:27, 2 replies)

You forgot...
That a teacher got fired because they where an alcoholic. That was a favorite at the schools I went to.
(Fredz A graveyard of hopes, a dump of ambition, Sun 1 Feb 2009, 14:42, closed)

Teacher who previously had a nervous breakdown
as sensitively portrayed in Grease 2
(HarryTheMole whatever's on my finger is going in your mouth, Mon 2 Feb 2009, 9:37, closed)