How is it not? Don't we have affirmative action still here for regular college admissions? So who do you exclude form the program? Rapists, murderes? Is the college program just for Minimum Security inmates? If you start cherry picking canidates you will be excluding some, so if you are in prison and have are suposed to give up your rights, then everyone would have to be afforded the opportunity. I don't think you could deny someone like a college rejection letter!
I don't think you could have an admissions department I htink it you would have to take everyone that wanted to.