As far as I know , yet I may be VERY wrong , paying for training and graduating one of the "atc colleges" doesn't get you anywhere . I mean every ATSA tests , trains , employes , people that pass their selection process. Of course if you want to get employed by some private ATSA controlling small airports , go ahead , but it may not be the thing you dreamed of .
Sorry if I was very discouraging , but it is for your own good !