- 0101 Andhra Pradesh Board of Intermediate Education, Hyderabad
- 0102 Andhra Pradesh Board of Secondary Education, Hyderabad
- 0103 Andhra Pradesh Open School Society, SCERT Campus, Hyderabad
- 0201 Assam Higher Secondary Education Council, Bamunimaidan, Guwahati
- 0202 Assam Board of Secondary Education, Guwahati
- 0301 Bihar Intermediate Education Council, Patna
- 0302 Bihar School Examination Board, Patna
- 0303 Bihar Sanskrit Shiksha Board, Patna
- 2901 Chhatisgarh Board of Secondary Education, Raipur
- 2801 Goa Board of Secondary & Higher Secondary Education, Goa
- 0401 Gujarat Secondary & Higher Secondary Education Board, Gandhi Nagar
- 0501 Haryana Board of Education, Hansi Road, Bhiwani
- 0502 Haryana Open School, Bhiwani
- 0601 Himachal Pradesh Board of School Education, Dharamshala
- 2601 Jharkhand Academic Council, Ranchi
- 0801 Karnataka Board of the Pre-University Education, Bangalore
- 0802 Karnataka Secondary Education Examination Borad, Bangalore
- 0803 Karnataka Open School, J.S.S. Maha Vidya Peeth, Mysore
- 0901 Kerala Board of Public Examinations, Pareeksha Bhawan, Thiruvananthpuram
- 0902 Kerala Board of Higher Secondary Education, Thiruvananthapuram
- 0903 Kerala State Open School, Thiruvananthapuram
- 1101 Maharashtra State Board of Secondary and Higher Secondary Education, Pune
- 1001 Madhya Pradesh Board of Secondary Education, Bhopal
- 1002 M.P. State Open School, Bhopal
- 1201 Manipur Council of Higher Secondary Education, Imphal
- 1202 Manipur Board of Secondary Education, Imphal
- 1301 Meghalaya Board of School Education, Meghalaya
- 3001 Mizoram Board of School Education Chaltlan, Aizawl
- 1401 Nagaland Board of School Education, Kohima
- 1501 Orissa Council of Higher Secondary Education Bhubaneswar
- 1502 Orissa Board of Secondary Education, Cuttack
- 1601 Punjab School Education Board, Mohali
- 1701 Rajasthan Board of Secondary Education, Ajmer
- 1702 Rajasthan State Open School, Jaipur
Note: More such institutions can be added once NIOS gets to know about them authoritatively.
Courtesy: National Institute of Open Schooling
- 1901 Tamil Nadu Board of Secondary Education, Chennai
- 1902 Tamil Nadu Board of Higher Secondary Education, Chennai
- 2001 Tripura Board of Secondary Education, Agartala, Tripura West
- 2101 U.P. Board of High School & Intermediate Education, Allahabad
- 3401 Uttranchal Shiksha Evm Pariksha Parishad, Ram Nagar, Nainital
- 2201 West Bengal Board of Secondary Education, Calcutta
- 2202 West Bengal Council of Higher Secondary Education, Calcutta
- 2203 Rabindra Mukta Vidyalaya (W.B. State Open School)
- 2204 West Bengal Board of Madarsa Education
ALL INDIA BOARDS
- 9901 National Institute of Open Schooling (formarly National Open School), New Delhi
- 9902 Central Board of Secondary Education, Delhi
- 9903 Council for Indian School Certificate Examinations, New Delhi
OTHER INSTITUTES RECOGNISED FOR SECONDARY LEVEL
- 9801 Rashtriya Sanskrit Sansthan, New Delhi.
- 9802 Gurukul Kangri Vishwavidyalaya, Haridwar,
- 9803 Directorate of Army Education, New Delhi.
- 9804 Aligarh Muslim University, Aligarh.
- 9805 Jamia Miliya Hamdard University.
- 9806 Banasthali Vidyapith, Banasthali, Rajasthan
- 9807 Jamia Millia Islamia, New Delhi
- 9808 IGCSE Programme from University of Cambridge, International Exam.
- 9999 Any recognizd Board of foreign countries
For a learner who possesses a High School/Secondary Certificate from any Foreign Board/University and wants to take admission in Senior Secondary course of NIOS, is required to attach a certificate from the concerned Embassy to the effect that the examination passed is equivalent to the Indian High School/Secondary Examination. The code is 9999.
- NON-RECOGNISED BOARDS/UNIVERSITIES NOT CONSIDERED FORADMISSION AT NIOS
- Central Board of Higher Education, Aspati Bhawan, Uttam Nagar, New Delhi.
- All India Board of Secondary Education, Gazipur
- Central Board of Higher Education, East Patel Nagar, New Delhi.
- Board of Adult Education and Training, Brahmpuri, Nagal Rai, New Delhi.
- Gurukul Vishwavidyalaya, Vrindavan
- Bihar State Madarsa Education Board, Patna
- Akhil Bhartiya Shiksha Sansthan, New Delhi.
- ACN International University, Raipur
- Doon International University, Raipur
- Hindi Sahitya Sammelan, Allahabad (recognised by the Govt. of India for purpose of employment)