Private education. I see this as a sector of huge growth potential - not only in the Third World. It might not be easy to launch developments that move us in that direction, especially in the richer countries which are sclerotic with state education. But I do not think that special interests and certain self-interested concerns of the state will necessarily preclude massive privatisation. Teachers might enjoy more fulfilling careers and even earn more in the private sector. Also, there may be political forces who champion improved social capital or simply adjust to unforeseen societal sea-change. After all, the state has not opposed the private computer and internet revolution, even though especially the latter has effectively created a realm of parallel education and independent intelligence.
However, I hope I am wrong in my impression that paying more to have a greater say in the quality of one's offspring's education seems to be a more common ambition in the Third World than in the richest nations.