To state the facts, a school teacher teaching 4/5th grade kids would hardly be given a $150 salary. In second tier cities, it's even lesser.
I would say, not just this, but there is also a huge difference in the line of thought and a tendency to resign oneself to fate, among Indians. That is almost always part of the upbringing. The ones landing up as teachers would resign to their fates and stop (and resist vehemently) any attempt to keep oneself up-to-date or develop their skills.
And the sad part is, even the interested ones are forcibly turned into indifferent ones, due to various socio-cultural changes presently seen in the economically shining nation.
A relevant article: http://www.hindu.com/op/2011/04/24/stories/2011042453622000....