All India School of Open Schooling (AIIOS) Under the UNIQUE EDUCATION WELFARE CENTER, Since 1997 was legally established Society  under the guidance of jurist, eminent educationists and social workers for the development of education in wide areas. Government of NCT of Delhi, registered the Board for propagation and development of education on the pattern of Regular Private & Open Education System on 07th March 1997 India.

All India School of Open Schooling (AIIOS) under public trust act of 1882. Vide Registration No 1500, The Board, under Government of India, is Legal Autonomous and non profit Institution and has legal right of teaching (Secondary/Sr.Secondary education) under the provision of constitution. Copies of Bylaws, prospectus, etc. are sent to the various Authorities and Departments of the Government of India/State Governments and Union Territories by the Board from time to time. The area of operation of the Board is wide and extensive all over India.
Information centers of examination are situated in almost all-major cities of India where semester/annual examinations are normally organized every year in May/September. Board is planning to open study examination centers for foreigners and non-resident Indians in various parts of the world.