According to a study carried out by the New Economics Foundation, primary schoolchildren are a lot happier than their secondary counterparts. The study looked at two measures of well-being in more than 1,000 youngsters aged 7 to 19 attending Nottingham schools. The study claims that the well-being and overall happiness of young people drops drastically when they switch from primary to secondary school, with significant effects on their personal development. It finds that a third of children are so badly affected by the transition that they become vulnerable to mental illness.
http://www.neweconomics.org/gen/news_youthwb.aspx