msseeker:
Before you make a claim, show me the numbers.
WIY:
For your first point, is he really? Or is he just confused, having a bad situation at home, etc. and just needs some help?
Once again, if he really is a lost cause, and is hurting others, then OK. But then you are giving up on a member of Klal Yisroel.
For a suggestion: How about one class for the pure blood Ashkinazim, and another (with a fence in between, so they can’t play together) for those who are Baalei Teshuva, Americans, and Sephardim whose relatives may own a TV?
That might work. ;-(