I use it to refresh some engineering maths I have forgotten (ODE, numerical schemas, solving linear equations, data sciences algorithms, etc) and the explanations are most of the time great and usually 2 or 3 prompts give me a good overview and explain the tricky details.

I also use it to remember some python stuff. In rust, it is less good: makes mistakes.

In those two domains, at that level, it's really good.

It could help students I think.