Unfortunately, we can't modify much of the environment without giving up a lot of what we have. And, that's the trade-off of rapid progress - evolution is no where near as fast. We probably should change the schools for many reasons. But, changing them so that they're somehow more natural is probably an impossible goal, at least until we invent more technology.
Humans have had to deal environmental diseases at every major milestone: choosing residential over nomadic; domesticating livestock; using grain as a primary food source; choosing urban over rural; inventing industry, the corporation, and desk jobs; inventing dangerous chemicals for products and fuel; inventing processed foods; inventing weapons of mass destruction. The diseases that have come with these have been trade-offs that we have accepted.
As a sufferer of several psychological diseases, I suspect that mine are all environmental in some way - stress, close-quarters living, giant social hierarchies, living by the calendar and clock, being exposed to all sorts of toxins, etc. My nature tells me that I should be out running through the forest and chasing game - not sitting at a desk and typing on a keyboard. But, am I going to live alone in the forest? Hell no; I enjoy what I have.
I take several psychological drugs, and they have awful side-effects. And, I self-medicate in other ways. But, those are the trade-offs that I've chosen to be able to do all the things that my mind conjures.