(CNBC) Has college tuition reached a tipping point?

The cost of higher education has been rising for years, and now parents are becoming less and less willing to shoulder much of the burden, according to a survey by Discover Student Loans.

“Is College Worth It?” assesses the problems of American higher education, from runaway costs to inferior academics to poor graduation rates to political indoctrination.

In 2012, 39 percent of parents thought their children should pay most or all of their college costs. But in 2014, 47 percent held that view.

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