Per SmartMoney: SmartMoney looked at two groups of alumni: recent grads, out for an average of two years, and midcareer alums, out 15 years. The Payback Score is an average of those groups' current income, expressed as a percentage of their sticker-price tuition and fees.
The sites factored in things like tuition, loan debt, earning potential, and median mid-career pay. And the higher the Payback Score, the better.
Go to SmartMoney to see the entire list.