But like I said upthread, there are schools that were built in the 50s and 60s that lack adequate facilities. Poor heating, pipes freezing, flooding, rodents, no AC, roof leaks, etc. These facilities were not maintained over the last 60 years due to lack of investment, poor resource allocation, and general ineptitude, or even graft. That can be addressed by putting dollars into the facilities. And because the teaching of kids that come extreme poverty can be very challenging, it often costs more in teacher salary to retain the teachers willing to work in that space.