The principle is to benefit from the expertise and experience of teachers who received the accreditation of pedagogical excellence (AEP, see below). In order to be members of the “Maestros” Teacher Network, AEP teachers need to go through a selection process which requires giving evidence, through the submission of a portfolio, that they have the skills to work well with their peers. The Network members design projects aimed at working with other teachers outside school hours. In recent years, a focus of the work has been the development of mentoring programmes for beginning teachers.