Apologies for bumping this round a few other threads. But their all based on the IPC, so thought this may be relevent to people asking how effective the IPC is. I have since written a letter that is much more composed than my first post on this thread. This along with teacher power may lead to us no longer using the IPC. If anyone would like a copy of it (listing the IPC's faults and how it's not in a schools best interest to use it) please private message me and I'll be happy to send you a copy you can use.