I would defintiely recommend taking this to the board of governors, but as for this:
have you taken this to OC A or the education officer? Aren't they normally governors at the local schools?
sorry, why ? This just makes me cringe, having been a school governor, the last thing you want is some muppet doing this for a secondary duty and trying to make his/her mark for the duration of their tour.
I haven't seen anything like this from my son's school.
S_H