Kuwait had the highest literacy rate in the Arab world in 2010. The general education system consists of four levels:  kindergarten (lasting for 2 years), primary (lasting for 5 years), intermediate (lasting for 4 years) and secondary (lasting for 3 years). Schooling at primary and intermediate level is compulsory for all students aged 6 – 14. All the levels of state education, including higher education, are free. The public education system is undergoing a revamp due to a project in conjunction with the World Bank.