This decision is consistent with the voucher decision. the SCOTUS did not order vouchers, or forbid them, but made the state and legislatures free to decide what to do with their education money.
They basically said that this was a state's right issue. No one has the "right" to free state money for college education. The state can frame the rules.
If the SCOTUS forced the state to provide the money, then all sorts of wierdos (Wiccans, Christian Scientists) and even potential enemies (radical Muslims) could be demanding state money to be "trained" at their "institutions of higher learning."
Let off your steam but I'm with the SCOTUS on this one.
Our taxpayer money is already being used to support the 'education' of Wiccans, Satanists etc.
Just take a look at 'Women's Studies' faculty and course offerings a major universities, and you will find an abundance of evidence.