By Felipe Barrera-Osorio** Caldas, Colombia. As part of the 30-year anniversary celebration of the alliance between Escuela Nueva and the Colombia’s National Coffee Federation, I was invited in 2012 to speak about public-private partnerships in education. The event included a presentation by five articulate, passionate and interesting teenagers about a science project on … [Read more...] about Escuela Nueva: A Promising Model in Need of Better Evidence