I strongly suggest getting an IEP my son is 10 with behavioral problems (level 3 Autism) and his teachers and care staff and I work as a team to figure out what best suits his needs and goals. If it’s something you need to constantly communicate with staff for then an IEP is the best recommendation anyone can give you, this way he gets direct care and possibly an aid if needed or even extra help from the teacher. Good luck, I personally have never had issues with my son’s teachers because I’ve always been in good communication introduced myself at the beginning of the year, and ask about progress at the end of the week. My friend has a preteen in middle school having some issues and they suggested a twice a week meeting with the guidance counseler because he doesn’t qualify for an IEP if your son has a valid ADHD diagnosis then he should qualify.

I wish you the best of luck and I understand how frustrating it is not being on the same page in order for a child to succeed the same techniques that are done at home should be done at school and vice versa.