It sounds to me like getting the testing-- which is fabulous that you have a district that jumped right in it-- will perhaps give you some more data to help you figure out what your son really needs. If its thorough testing it might help you see how his learning style or other aspects are not lining up with his class and even what would help. Or maybe it'll just give you the confidence that you do know your son and that he's just reacting to busywork. I think it can be a challenge to fly blind (we haven't had testing) especially if your kid and you have issues with his experience. Information is empowering.
And seriously pink hair and choosing clothes? Come to California, where I read that and can't believe there are places that care about that stuff, and I'm the uptight one around here

that said, structure is good for a lot of kids so getting his needs really identified and sorted and making sure he has appropriate work to focus on can only help.
Hang in there!