I've just trawled through the lengthy thread on 'parents as teachers', but just wondered if any heads had actually taken his advice and asked for parents to cover?...and if anyone has taken them up on it!
I think I was told a while ago that only 'teachers' - ie people with a 'teacher number' can take a register, so that can only be done by a qualified person(!) and I wonder what the situation is with regard to CRB checks. TAs and cover supervisors all need to be checked out, why should parents be assumed to be 'safe'? What on earth would happen if, God forbid, there was 'an incident'?
Everyome would have to be CRB'd, first aid(?) trained, how to evacuate a school if the fire alarm goes off, ring up a parent you do not know if their child has an accident, control a classroom full of kids who know you don't know what you're doing. Probably a load of other scenarios I can't think of.