L.S.
perhaps there are breathing techniques you can teach him. At this age they are trying to figure out how to control their tempers and anger, etc. This could be my nephew. Also, they could just need some extra sleep and food. My nephew yesterday was falling apart. Everything was so over the top and the littlest things bugged him big time, esp when they weren't going his way. The solution was just to put him in his room and he fell asleep in less than a minute. Sometimes all you need is a nap and some good anger management techniques (deep breathing, counting to three, etc). Perhaps the school may have some resources or online.