I think the best way to nip it in the bud is to put him in a private school where you now live. I feal if your 10 yo was in a private unstructured school,he will behave better.signed behaviordoctor30605
Was he happy with the move? Sounds to me like he's possibly rebelling against your decision and perhaps trying to punish you fot it (and others around him, including himself). Could however, just be his age. My son has just turned twelve and like your son, started displaying some bad behaviour at around age 10. I think they go through quite a transisiotn ata round that time in their lives, they are getting a bit bigger and seem to have more opinions about life that they're not sure how to express. All you can do is stay supportive (easier said than done i know, believe me) in the meantime, communicate well and see if there aren't any underlying problems at school you may be unaware of.
Good Luck :-)
I agree, it sounds like he is unhappy about the move. Most kids at his age don't adjust well to moving. Perhaps he has a best friend back at home? You could try calling parents of old friends and asking if they would send a video message back for him? Who knows, maybe that will also give him reason to believe you really do care about him and his "lost" friends back home. I moved quite a lot when I was a kid and I reacted different but the feelings were the same. "My parents don't care that I had friends".
Yikes. He sounds completely miserable, and your description of his school doesn't sound inviting at all.
Can you move back, or find a school with an environment that is more like the school he was so comfortable in? He sounds like he is completely floundering.