COTA in a public school system in NJ

I have personally had the Wilbarger training several times, most recently about 5 years ago. I am comfortable doing the brushing and joint compressions as part of a sensory diet. A recent problem we had come up here in school is whether or not the educational assistant (classroom aide) is qualified to touch a student in this manner (i.e. joint compressions) even after being trained by a therapist? The assistants are not comfortable doing this and I hope you can answer my question since my principal is awaiting some clarification. It also is an issue of being "educationally relevant" versus a clinical model of intervention and is in question whether we should be doing the protocol in school or letting the parents and outside OT handle this. Thanks!