Hi,
If it helps I'm going through the same thing. I had a MR overturn a decision of not being awarded DLA, but then a report under the name of SENDCO but filled in by the teacher last year (she never listened and denied things) then was sent in and they decided the school knew more than the Drs, CAMHS and myself. So again it was stopped.
I have done another MR as it was classed as a new award, but has been told that school is listened to more than a parent, hospital, GP, CAMHS etc which is shocking.
The school, ironically, are now asking asap for an appointment to meet with me to discuss my child as they are concerned about him. It is the same issue I had with my daughter. She is ASD but a masker. So because she wasn't a bother they didn't care. Even though now it is so bad she can't cope, they didn't care as she wasn't a child throwing a chair across a classroom.
Annoyingly, my child has YMCA counselling, one to one support, help with wetting and SLT..... but the teacher last year said none of it was an issue suddenly and it all stopped.
I think I will end up going down the appeal route and although with my own disabilities this is the last thing I need, I am also ready to fight. Just google statistics on appeals. It will help you.
I also know first hand of after a tribunal letter sent in, within a week a PIP assessment so not only agreed but was even more than they thought and helped with work capacity.
I hope you are ok.