Reduce the tuition, which last I checked is still a substantial portion of the total cost of education.

How can a school charge the same amount of tuition, per unit, for different fields that pay substantially, sometimes orders of magnitude, different over the lifetime.

For example: MBAs, JDs, Medical fields' tuition is much higher. Why is that not the case across the board?

They might not. You have the degree program, and you have the classes. This sounds a lot like unbundling your cable channels. Maybe go for market prices per class. Some classes would be worth more than their averaged share of tuition today, others less. You could always turn class sign-up into an auction.

Do they deserve to survive? Maybe state could subsidise certain number of positions. And distribute them by something fair like SAT score or proper objectively measured entrance exams.