excellent point

schools are just buildings

Logically, we don't need to build structures and many forms of infrastructure in these conquered territories. They already had that sort of figured out. The problem (although I don't think English was necessarily the right subject matter, Arabic or Pashtu maybe) is the lack of qualified educators to fill the schools with their actual purpose: learning. I'd guess this is a no-brainer for any country other than America which does a terrible job figuring out how to educate its underclass of citizens and only a moderately good job of figuring out how to educate its best and brightest.