The French education system is split into three stages: primary school (école), secondary school (collège) and high school (lycée). Primary and secondary education is free, neutral, secular and compulsory between the ages of 6 and 16. However, there are some private schools that are not subject to these obligations and particularities of the French education system.The primary school curriculum in France is similar to that in other countries, and includes literacy and numeracy, with classes in French, arithmetic, but also geography and history, the arts, and more and more frequently a foreign language, Middle school. Four levels, normally for pupils aged 11 - 15. The "collège unique" is the backbone of the French school system. All pupils go to collège, usually at age 11. The baccalauréat, France colloquially as le bac, is an academic qualification take at the end of the lycée (secondary education). It was introduced by Napoleon I in 1808. It is the main diploma required to pursue university studies. Unlike English "A levels" or Scottish "highers", the baccalaureate is a unitary exam, that pupils pass or fail. It is impossible to pass in one subject and fail in others. The only mark that counts is the final weighted average, which must be at last 10/20 for a pupil to pass. Pupils who achieve just under 10/20 are often passed by the exam board, whose decision is final. This is an exam which is said to be very difficult and I saw very serious studies being undertaken to pass this exam.