21. Many countries also specify a minimum school leaving age , at which a person is legally allowed to leave compulsory education. 22. After the Second World War the minimum school leaving age was 15; junior level courses at the colleges were scrapped. 23. On 1 January 2009, the school leaving age was raised to 17 ( having previously been 15 and then 16 ). 24. The school leaving age was increased to 16, new courses were introduced and Fair Oak became an increasingly popular residential area. 25. *In January 2007 Education Secretary Alan Johnson announced plans to extend the school leaving age in England to eighteen by 2013. 26. These huts were introduced across the country under Clement Attlee to help cope with the raising of the school leaving age to 15. 27. The school leaving age was raised to 16, while Family Income Supplement was introduced to boost the incomes of low-income earners. 28. Hacker argues that the school leaving age was raised to 16 so that children could learn more when in fact they are learning less. 29. The library was built in 1973 as the numbers of students, as a result of the school leaving age being raised to 16. 30. For instance a natural experiment in Norway where the school leaving age was changed suggested that IQ was raised by additional year of school.