As parents eyeing tuition bills and graduates staggering under the weight of their student loan debt can tell you, college is not cheap. The average cost of in-state tuition and fees at a public four-year, in-state university was $9,410 and $32,405 at private four-year colleges in 2015-16, according to the College Board. ­That amount does not account for other necessary expenses, such as transportation, room and board, books and incidentals.