Special and supplementary schools parallel the mainstream educational system from the elementary through senior high and senior vocational school levels. Supplementary education plays its main role in vocational education, with a secondary role in higher education. At the top of the supplementary system is the National Open University, which offers classes via radio, television and correspondence, with graduates earning a bachelor's degree. The government also supports a number of social education programs, which include training in Mandarin Chinese, family education, folk arts, libraries as well as cultural centers across the island. Adult education classes are offered after-hours at public schools in writing skills, practical mathematics, and civics.
Extension programs covering basic job skills are also available at training centers.