P.S. Redclanger, one of my aunts was a teacher, and an uncle was Deputy Director of Education for the town I grew up in. I am not as ignorant of the teaching world as you imply.
One example of teacher ignorance, is the local schoolmistress, going of a holiday on the Isle of Wight, couldn't find the Duty Free shop on the ferry?????????????
Ejucation's a wunderful think if you can get it!!!! Pity most can't.
valmarg