I think you summed up the problem quite well and acknowledged that colleges aren't in much of a position to solve it, but seem happy with a solution that ignores the problem. A much more effective effort would be to solve the problem and ensure that there is equality of opportunity as much as possible, like eliminating your postcode determining your quality of schooling.

Don't forget that not everyone is college bound, those that don't get help from the college will still have a poor education, will still live a poor community and will still have another generation of kids facing the same issues.