UPDATE:

I just received this response from my international contact on the question - - Are there any
incentives to further your education?

Response:
Teachers receive points to further their education. They can attend courses or whatever is officially accepted by the 'ministerio de educación y cultura' to get those points that will be translated into years of teaching. They are important because depending on those years a teacher can move from school to school, until the one that she/he specifically asks.

Thought it was very interesting!