This analyses of the paper show to develop innovative educational projects through teacher training. The starting point is "learning communities", which is a project to change educational practice. It has a long history in Spain. This project is generated according to the assessment process in order to change practices required by Miguel Hernandez School, located in Castro Urdiales, Cantabria. The University of Cantabria oversees the teacher training and organises training meetings with the teachers and volunteers involved in the transformation, such as learning communities, interactive groups, literary gatherings, etc., in order to improve innovative practices. The main success of this process is that the teachers, as they see the positive results of the implementation of these measures, have increasingly asked for more training in this area, because they have come to realize that they are contributing to offering better education for their students through their own professional training and intervention. In order to change educational practices at school, teacher training must be a main priority in any innovative projects.