Like many others I am surprised the school has not been part of the diagnostic process as they should have been. ADHD is complex and with a doctor just giving out meds I am skeptical about the validity of the parents comments. Definately get the parent to send in all paperwork and follow this up with CAHMS particularly if no teachers have raised concerns. I would however check the child’s work just in case he has slipped through. So before making any move to place on the register this needs unpacking. Good luck.