At a time when reforms to the education system are explicitly designed to respect pupils' rhythms by organizing education into cycles, Maria Montessori's texts are well worth reading. Before many others, she had experimented with and thought out such a progression, taking up the challenge of creating tools so that children and teenagers could learn by themselves and not by listening to teaching. After L'enfant (0 to 6 years), in this book she develops the next three cycles, from schoolchild to student.