Or even less contrived (to avoid upsetting people that like HackerRank) - 'Which universities' students have the best HackerRank?'

So much this. If I am getting my degree from an established/well known university I am much less likely to do something like this. This is even more the case for top students from top universities.

My business school had all graduating seniors take a similar assessment and liked to advertise that our students scored in the top 99% of all universities on the test. The thing they left out is that the top 50% of business schools did even bother with the test.

That didn't make the assessment totally useless, but it also didn't mean that our graduates were in the top 1% of business schools.

Right, see the complete absence of MIT and Stanford as well as other top ivy league schools from this list. My assumption is that ivy league students have more important things to do than be on Hacker Ranker, still a good opportunity for developing countries and people with lesser means to get an education but I wouldn't trust these "Rankings"