Have you tried census records? It will tell you where they lived at least. If they taught in rural schools they usually boarded with someone in the school district. And then you might be able to find an old map that shows the school districts. Also check the county school offices. Sometimes but not always they kept records of the schools once they shut down. You can't expect to find one website that will tell you everything. You have to hunt through a lot of resources even nowadays. Carnegie Library in Pittsburgh has a lot of stuff. I'm not sure what they have online.