At a time when education system reforms are explicitly designed to respect pupils' rhythms by organizing education into cycles, it's worth reading the texts of Maria Montessori. Before many others, she had experimented with and thought out such a progression, taking up the challenge of creating tools to help children and teenagers learn on their own, rather than by listening to teaching. After L'enfant (0 to 6 years), in this book she develops the next three cycles, from schoolchildren to students.
