I agree with that --- only some kids are ready to handle the pressures of college and being far from home. Especially if they've been sheltered and protected from the world in some way --- it can be very jolting --- which is why suicides have become a problem in universities.
I had major depression and suicide attempt my first year of college. It was a complete and absolute culture shock. I had no idea. It was almost like a lamb to the slaughter. It has taken me thirteen years almost to unravel the damage.
Carolyn