Chaucer lived in a society that was aware of childhood and adolescence as distinctive stages of human life and which inherited practices whereby young people were brought up and trained for adulthood. Informally, at home, children were introduced to social norms, religion and work. Those from wealthier families underwent more formal education, mastering literacy at home, in schools or in great households, where they learnt reading, rules of courtesy, French and, in the case of some boys, Latin. Chaucer’s works refer in passing to most of these processes, with particular attention to adolescents, including university scholars. During the fifteenth century his works in general came to be seen as having educational value. The Astrolabe, first written for his son Lewis, seems to have been used for teaching reading to other young children while his major writings were recommended as suitable literature for older ones.