I agree, the company has been doing this since day one and it is good thing for everyone involved, (except maybe the stockholders....j/k). I do believe, however that the company has its hands dipped into too many pots at one time.......spread too thin.
SL rural schools are just huts like everyone lives in. As we all saw in Doug's invitation for a few shareholders to come and inspect you will live like they do with outdoor plumbimg and local food.
I expect they get volunteer teachers from Peace Corps or something. I doubt it is much expense. SGCP is just helping with western organization.
When I worked in medicine I was always getting requests to volunteer in third world clinics.