Generally if something is free its value to others is pretty close to 0.
If you want college tuition to go down, stop pumping it full of government money and make them compete for students.
If there really is a concern about needing to publicly fund college tuition, ask the recipients of other people’s tax money to give back by requiring a term of civil service similar to a military enlistment program. They train you and in return you commit X number of years to their goals and programs. It works for soldiers, it can work for accountants, engineers, nurses, doctors etc. and actually save taxpayers money while providing qualified employees and useful services that help keep costs down. If its a useless degree, there is no need for taxpayers like you or I to fund it.