Why students get rejected from college

Recently I got rejected by a couple of reach schools. It's just 2 down, more to go!

If your dream school turns you down, dream new dreams.

I don't like the English phrase "dream school" since a dream for me is something much closer to the goal in my lifetime.
But I do get soothed by the next sentence from the author.

The truth is that there is always a reason that colleges accept a student, but very often there is not a reason that they don’t. It’s truly nothing you did--or even didn’t do.

in reference to: The Answer Sheet - Why students get rejected from college (view on Google Sidewiki)