Not everything that is faced can be changed, but nothing can be changed until it is faced. - Eric Barker

Shawn Achor’s research at Harvard shows that college grades aren’t any more predictive of subsequent life success than rolling dice. A study of over seven hundred American millionaires showed their average college GPA was 2.9.

You were successful because you happened to be in an environment where your biases and predispositions and talents and abilities all happened to align neatly with those things that would produce success in that environment.

The second reason is that schools reward being a generalist. There is little recognition of student passion or expertise. The real world, however, does the reverse.