National Institute of Open Schooling (NIOS)
Noida, national board
The pioneer of open schooling in India, started as the National Open School in 1989. It is an autonomous organisation under the Ministry of Education, Government of India. Secondary from age 14 and Senior Secondary from age 15, with a minimum of five subjects. Public examinations are held in April–May and October–November, and registered learners can also use its On Demand Examination.