my child has and asst teacher in his classroom and we refused to sign the IEP unless it was on there. now our Special Education is paid for by a regional agency not just our sd.
as for the bip i have been told over and over by the school sw that it is a fluid and living document that is constantly changing. we meet every 2-4 wks tweeking difficult child's bip. if the suspensions are the direct result of not implementing bip or problems aren't addressed in bip they are setting themselves up for possible problems down the line you decide to get fape elsewhere. you can call for a bip anytime and you are part of the team so don't let them get away with-telling you no!
good luck sound like you have one of those sd that will say no to you until you back them in a corner just hoping that you will give it up.