go do your homework and look and see if is your right ,to get him tested ,if nothing can be done talk to your son docter and see what he can do .also ask the school what are the reqirement to get tested and most important talk to your son ask him question and make sure what the problem on that end. he could be feeling down or it could be lot of things. i dont know more or less hoe old he is.i wish you and your son the best. i hope this help!