Cyber schools for developing countries realistic?

The internet could bring highly qualified teachers to developing communities that need them without anyone having to get on a plane (i.e. affordably [sp?]). There would be no shortage of “old” computers that could be donated and shipped around the world as needed.

Given spotty availability of electricity and lack of high-speed internet infrastructure, however, plus no infrastructure to properly dispose of e-waste from computers, how can one make this happen?