Vouchers

What are the implications of home-grown suicide bombers in America and now in England for the homeschooling and voucher movement? I used to be of the opinion that a few white supremacy/black supremacy fruit-loop operations would be a small price to pay for the efficiency gains to be had from breaking the public school monopoly. Now I am not so sure. Has anyone thought about this or seen anything on the subject? Of course one possibility is that there could be a trade off--a gain at the mean in exchange for a few bad outliers.