[zach]

Right, score inflation alongside grade inflation. The administrators of the GMAT have an answer to that: https://www.gmac.com/why-gmac/gmac-news/gmnews/2017/july-201...

It says that it doesn't explain the "conundrum" of increased higher-end scores. But it definitely addresses that it's very unlikely the test has gotten easier, since average scores have remained stable, as they have for the PSAT and ACT.

[njarboe]

If the top 20% of the population took the ACT in the 1980's and now its the top 60%, one could easily see how the test got easier and the average scores remained stable.