Sometimes a change in behavior is better attributed to environmental or situational changes, rather than medication failing.
School provides a lot of structure and he learns what to expect there, for the most part, early on. That fosters less outbursts and unwanted behaviors. Now, it’s summer, and he doesn’t have that same structure and predictability. Plus, I think summer camp is a much bigger social challenge than even school. So, I wouldn’t worry too much about this change in behavior yet, until you see that it’s happening in multiple environments, and where it didn’t before.
In preparing for the new school year, I always write a letter to the teacher and give them a 1-page summary of the IEP or 504 plan. The letter is very short — actually, 2 letters, one from parents and one from my son. You can use these samples as a guide:
ADDitude Community Moderator, Author & Mentor on Parenting ADHD, Mom to teen w/ ADHD, LDs, and autism