Commentary: Students beware: Income-based loan repayment can cost you

What goes up must come down. Except your age and college tuition.America’s colleges welcomed nearly 20 million people to campus last fall. College enrollment has shot up 30 percent in roughly two decades. Given that college graduates earn 56 percent more than high school graduates, that’s great news.The bad news? Tuition is increasing faster than the general inflation rate and has been for many years. Today, 44 million Americans are saddled with student loan debt, totaling $28,500 on