Idk, I think our area is pretty average. My kids go to a charter school 100% funded by taxes (enrollment by lottery), so I guess there's a little more money to go toward teachers instead of grounds and buses. But even the local public schools have ~25 students per class.

That said, I am in the US, which is a rich country, but we lag a lot of countries in education spending, and my state is on the lower end of the spectrum of spending per student. I think we just pay our teachers less than other areas.