Selection effects are extremely important in education. Dartmouth students have already had a large selection effect. If you try to apply this more broadly then it might not work.

Motivation is also a huge part of the problem. I'm wondering if the novelty of the AI tutoring gets more people to try it and whether it would wear off?

It's surprising to me that many students at Dartmouth don't read the textbook. You'd think college admissions would select for that?

It seems promising but, as they say, more research needed.