Schooling is a vital part of modern society. Intellectually, schools aim to educate pupils, to develop knowledge and skills that will help them achieve employment, further their adult career, and contribute to their society. Schools are also an immensely important social forum for children and young people. Over a period of some ten to twelve years, they will spend many thousands of hours at school with same-age and similar-age peers, as well as with teachers and other school personnel.