One of my kids has an IEP, and the school has almost always been responsive and helpful. We only had a problem once, when a staff member who had never met my child was in the meeting making incorrect statements about my child. Other than that, the special ed people have been caring and responsive to the child's needs and my requests. We are in a financially well-off district, and I am always available and very involved in the process - both factors apparently make a difference.
A relative used to be a special ed teacher, and constantly ran into turf battles, politics, penny-pinching, and so forth. His districts were not as well-off financially, and many parents didn't bother to show up for meetings.
I feel for the parents who need arbitrators - it's so sad and frustrating that they need to fight for their kids to get the appropriate education and accommodations. I am fortunate that our situation has almost always been very positive.