Sounds like a clever boy,Is he on any meds? Good Teacher should be able
to quell his Tantrums in class,qiuetly talking
to him, playing it down and not dramatising it.Will he listen to you if so ask him why he feels bad enough to throw things and shout, see what he says,doe she fget enough attention as kids have been known to Demand it in negative ways if its all they get, does his Teacher draw hin into the class with the others does he feel part of the Group?