DISCLAIMER (I am 24 and have no children)
That said, I get out of work and arrive home about the time the local school lets out, say 3:15ish. The language that comes out of their mouths makes me sick and I was in a fraternity in college. These kids are ages 8-12 I'd guess and they all walk home in front of my apartment. F this and F that. A girl who was maybe 10 describing 69 to an 8 or 9 year old boy she was walking with. That was just yesterday. Everyday it seems like I get a new lesson. I'm not saying it's the parent's fault or the school's but it certainly backs up what Tomcat said.