1) Call, don't email, when parents are upset about something, even if they emailed you. Pick up the phone.
2) Five positive parent conversations can help to balance out one not-so-positive conversation.
3) The Social Thinking curriculum rocks, and everyone should use it. Never have I ever seen more kids admit their own faults than I have in the past two weeks. Seriously, check it out. Superflex works miracles.
And one more for good measure:
4) Even pig-tailed, pink jacket wearing kindergarten girls are not above taking someone down for messing with their heavily guarded (by sitting on it like a mother hen) rock collection at recess.