In the middle of the diversity of voices, styles and instruments of analysis of teachers participating in the formative diagnostic evaluation course and Universidad Pedagógica Nacional's professors, the reader will find in this work an x-ray of the meaning of school, teacher and training in convulsive times, such as those we live in today. It is a reflection of a commotion that requires the pause that reading, writing and listening to think about ourselves through the lens of pedagogy, to get closer to the question: what is the meaning of training, of school, and of knowledge nowadays?