There is a clear conscience today that one of the dimensions of the crisis of education systems has to do with the crisis of the hegemonic models of how to teach and, above all, with the classic hegemonic definition of what to teach. There is also agreement about the fact that the great novelty of the times is that the nation is facing an…

Secondary education continues to expand rapidly worldwide. Equally important is its diversification. The present paper contends that the diversification of secondary education, while acknowledged, is not well studied. Despite the widespread expansion of secondary education in different world regions, the information available to researchers--and…