Future income isn't the only factor that should determine college choice, but it may be the most important one.

So how good are the famous college rankings from U.S. News & World Report at predicting future income? It turns out there are some majorly underrated and overrated schools.

We plotted U.S. News' ranking of the best colleges against PayScale's mid-career salary rank to identify the outliers (read the full methodology here).

University of Massachusetts Lowell emerged as the most underrated school, heading a list of state schools and lesser-known tech schools.