I hope the big conker tree is still there! When I was at school there, they only had a temporary block of toilets outside the infant building, partly on the field I think, by the back of the nursery building. You had to go out on your own and that was before school's were secure...it just wouldn't happpen now.
Everytime someone flushed a toilet, a pipe used to move around underneath the temp block (it was like a caraven) and I remember everyone said it was a ghost. I bet that led to some serious accidents!
I can't remember these old brick building toilets being knocked down but I assume it was 1990 ish because we got the playground activities painted on after that.