Basic Education is defined as the levels from preschool to middle school and includes other types of education such as special education, indigenous schools, bilingual school and adult remedial education. The state contains nearly 2,000 schools at this level including 1,225 preschools, 1,392 primary schools and 364 middle schools. Education Media Superior includes high schools, vocational schools and technical schools for those who graduate middle school. There are 115 campuses of this type located in all the municipalities of the state, but it covers less than 80% of the demand for this kind of education. The average number of years of schooling in the state is 7.5 years, meaning the completion of primary school and a little over a year in middle school. Levels of schooling increase with younger generations, with nearly all under 5 attending preschool before primary school. Nearly all children of age attend and finish primary school, and nearly all of these begin middle school. However, 8.8% of the population fifteen and older have not enrolled in school at all. 19% have completed primary, 27.2% have completed at least middle school/technical school, 17.9% have completed high school and 14.5 have gone onto higher education.