...so some people develop their sills using something like RAD* tooling which lets them develop skills quickly, and some don't and end up taking longer but getting better eventual results?

Also, the ungated part doesn't say how they're measure "top" high-school vs university students. It doesn't match what I've heard about the persistence and consistency of basically all standardized tests; are they using within-school rankings for this? If so, that would fit perfectly with students being sorted during university selection.

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* https://en.wikipedia.org/wiki/Rapid_application_development