Ask him about the general atmosphere at school. My daughters 12 and will be 13 in Dec. and I've noticed a change also - more cynical, attitude etc. There is a ton of name calling, swearing and drama at this age. This is the time when the reality of real life starts setting in and they start transitioning from being a carefree kid to a young adult. Have a nice talk and find out if the school atmosphere is toxic - he might be stressed out and bringing this home.

You can also get him into some regular exercise and some one on one time with your hubby or you. This will make him feel special and gives you a chance to talk about things. Good luck ((Tishie))