Is college worth it? Goldman Sachs says maybe not

CNN Money reports:

Many students are better off not going to mediocre colleges -- ones that rank in the bottom 25% of all universities -- Goldman says in a new report. They earn less, on average, than high school graduates.

But even those who attend mid-tier universities might want to reconsider.

"The average return on going to college is falling," Goldman researchers wrote. The bank is known for ruthlessly focusing on the bottom line.

The law of diminishing returns applies to education no matter what a tenured professor tells you.