Well, I don't really keep in touch with them (or with my old classmates in general), so I don't know that much.
As far as I know, one graduated from a very demanding and prestigious Univercity. He has tons of friends now and seems to have become a nice guy, at least on the surface. The guy was a real ass as a kid, however in the later years he became a bit more tame and friendly. So it's possible that now, as a grown up, he has actually become an ok person.
Another one has changed from being fit to obese in a really short period of time. I believe that's because of some kind of desease since such drastic changes don't happen without a reason. Despite him teasing me, he wasn't really that bad and we were on more or less friendly terms. As of today, he's working as a dentist and living a full life.
Another guy used to be the strongest one in the class and was really into sports. He was definitely a bully, but not a violent one. I don't know much of what's happening with him this days, other than he's extremely fit and looks like an athlete. Oh, and he owns a car of pretty good quality, so I guess his income is decent.
The last one used to be a sidekick of the person mentioned above. Despite doing some nasty stuff he was physically weak, so no real harm could have come from him. However, I must say, as a person he was (and still is) filth. After school, he was serving in the army a bit and he has become extremely fit, so now he's filth with muscles.