Does Joining a Fraternity or Sorority Actually Improve Grades and Earnings After Grad

[AnchorAlumna]

I know that the study we all quote was done by an outfit commissioned by organization of Greeks but I don't remember the name of the outfit nor the organization. But the NPC office ought to have copies of those pamphlets that have that information.
And it wasn't that "joining a GLO raises your GPA." It was more like those who are Greek are more likely to have a higher GPA.
This study was done at ONE university? Then it doesn't mean all universities and colleges follow suit.