The Indian National olympiad conducted by HBCSE every year for school students who qualified preliminary national screening tests. INO is really the 2nd Stage of the national selection process.
INO Exam 2026 Registration is compulsory for NSE 2025 qualifiers. Registration dates are between January 6 and 17, 2026.
How to register for the INO Exam 2026
- Visit the HBCSE official website
- Submit the required login credentials.
- Select your preferred examination centre from the list available in portal. (No changes of the centre will be allowed after January 17, 2026).
- If you have qualified for multiple subjects must express your order of priority for OCSC.
- Carefully check your details. Review your Name, Class, and Gender and all essentials.
- Submit your Form.
Required credentials to register for INO 2026
- NSE Roll number
- DOB
- Email ID
Exam Schedule For INO 2026
| Astronomy (INAO) | Saturday, January 31, 2026 | 09.00 a.m. – 12.00 noon |
| Chemistry (INChO) | Saturday, January 31, 2026 | 01.30 p.m. – 04.30 p.m |
| Junior Science (INJSO) | Sunday, February 01, 2026 | 09.00 a.m. – 12.00 noon |
| Physics (INPhO) | Sunday, February 01, 2026 | 09.00 a.m. – 12.00 noon |
| Biology (INBO) | Sunday, February 01, 2026 | 01.30 p.m. – 03.30 p.m. |
INO 2026 Important dates for students
| Registration for INO 2026 | January 06-17, 2026 |
| Hall Tickets download | January 23, 2026 |
| INO exam | January 31-February 01, 2026 |
| Question papers and provisional solutions on the HBCSE website: | February 03, 2026 |
| Comments on provisional solutions: | February 03-08, 2026 |
| INO marks and frozen solutions on the HBCSE website: | February 21, 2026 |
| Reevaluation request: | February 21-26, 2026 |
| INO final results and OCSC lists: | March 06, 2026 |





