Smell the coffee!
It's seldom about running off because you're angry about having a 9 p.m. school night curfew.
It's more about having school day bullying experiences and/or even having a homelife that goes FAR beyond the term "dysfunctional."
Even if it's about neither of those, there is, more times than not, a legitimate reason to want to get into a different environment.
Have these kids jumped from the frying pan into the fire or from the fire into the frying pan?
Either way, they need something better--MUCH better!