Just to add something, I put my daughter through private school (grade school) but she went to a public high school. She is a great kid. In high school she had some less than acceptable friends that were ok, but they talked to their parents like trash. One parent came to pick up her friend after a sleep over one weekend, and there was some words ( between mom and friend that stayed ) I don't recall what it was about but the friend was calling her mom names and cussing like a drunken sailor to her..wow just wow. When they left, I turned to my daughter and told her. Its ok to have friends, but she is smart enough to know right from wrong, I relayed what my dad once said to me and how I grew up, I also told her if she EVER talked to me like that I will put my boot in her ass and she wouldn't make it out the door fast enough! She swore up and down to never be like them, and she has stuck to her words to this day. It all starts with parenting, I never had to spank her but I have been very firm and protective of her raising her alone. She has become a fine young woman.
Just in todays world, the parents are not doing their job of raising their child properly and letting them run wild. Like these 3 that killed the young man...where were their parents? Ant the parents claim their kids were good kids, didn't do any wrong, yet they said they knew they were in a gang, the crips and still think they did no wrong yet had a history of run in with the law? Its beyond me.