If he is being excluded from participation in teams and clubs based on the fact that the application process is not accessible to him due to his disability, and he has been denied requested reasonable accommodations (such as a scribe or an alternate format application) in the application process, the school is in violation of the ADA.
Just sayin'...
You might want to check out other local community groups and resources, like 4H or your local homeschooling groups, to see if they have any clubs or teams that he could join, while you work things out with the school about finding a fairer way for your son to access the opportunities at school.
