Sounds just like our house! DS8 here has been horrendously bored with school since the new semester started, keeps asking why he has to take the rest of 3rd grade, why he has to go to school, why they have to learn stuff (which he really isn't doing much of anyway), the whole nine yards. He was doing well with behavior, but I've been fearing another outburst since he started talking about his "enemies" at school again.

We definitely have behavior/respect problems, no denying that, but it's exacerbated with boredom in school.