[RelativeDelta]

The kinds of studies this article is based on are less useful until their findings are disaggregated by both degree and attainment/performance within the degree.

How do extremely highly graded english majors stack up (ideologically and monetarily) against middle-of-the-pack business majors?

How do accelerated program grads fare compared to lowest quintile medical school post-grads? Etc.

How does course choice WITHIN degrees correlate with outcomes?

How does performance between professors and departments correlate?

Not all degrees are equal, not all courses are equal, not all professors are equal, and not all students are equal.

Lumping it all together as a single marker is borderline useless.