Every cycle of news + important dates we've captured for National Standard Examination in Biology, oldest cycles at the bottom. Live information is on the main exam page; this archive preserves what each previous cycle officially announced.
The National Standard Examination in Biology will be conducted on Sunday, November 22, 2026, from 2:30 PM to 4:30 PM at designated centres across India. This serves as Stage 1 of the Biology Olympiad pathway leading to the International Biology Olympiad.
Archived 23 Aug 2026
NSEB 2026 student enrolment will begin on August 21 and close on September 14, 2026. Students can register through their schools or directly via the IAPT website with a registration fee of ₹300. No late registrations will be accepted after the deadline.
Archived 23 Aug 2026
The Homi Bhabha Centre for Science Education has released the INBO 2026 result for students who qualified through NSEB 2025. Selected candidates can check their Group A and Group B status for the next stage, the Orientation cum Selection Camp in Biology.
Archived 23 Aug 2026
The Indian Association of Physics Teachers has started centre registration for NSEB 2026 from August 1, 2026, continuing until August 20. Schools and institutions can register as exam centres through iapt.org.in to conduct the National Standard Examination in Biology.
Archived 23 Aug 2026
<cite index="19-9">INBO will be held on February 1, 2026, from 13:30 to 15:30 hrs</cite>. This is the second stage of India's Biology Olympiad pathway, organized by HBCSE for the top ~300 NSEB qualifiers.
Archived 10 Aug 2026
<cite index="12-1">Centre registration for NSEB runs from August 1 to August 20, 2026</cite>, with <cite index="12-13,12-14">student enrolment beginning August 21 and closing September 14</cite>. Schools and colleges must complete centre registration before students can enrol.
Archived 10 Aug 2026
IAPT has confirmed that centre and student registration for the National Standard Examination in Biology 2026-27 cycle opens on August 1, 2026 via iapt.org.in. Students in Classes 11-12 can apply through authorized exam centres or directly online.
Archived 20 Jul 2026
<cite index="2-1,2-16">NSEB 2026 is expected to be conducted on 23 November 2026 for students interested in Biology Olympiads and the International Biology Olympiad pathway</cite>. <cite index="11-6">The exam will run from 2:30 PM to 4:30 PM at centres across India</cite>.
Archived 10 Aug 2026
The NSEB 2026-27 examination is expected to be conducted on November 23, 2026 from 2:30 PM to 4:30 PM at centres across India. The pen-and-paper exam will consist of 60 MCQs for 216 marks with negative marking.
Archived 20 Jul 2026
Students who qualified NSEB 2025-26 appeared for INBO on February 1, 2026. The top performers have proceeded to the Orientation-Cum-Selection Camp (OCSC) held at HBCSE Mumbai for final IBO 2026 team selection.
Archived 20 Jul 2026
<cite index="9-1,9-4">The NSEB Merit List 2026 is out, with shortlisted students now eligible for the Indian National Biology Olympiad 2026 scheduled for February 1, 2026</cite>. Around 300 top performers advance to the national stage.
Archived 10 Aug 2026
IAPT confirms the NSEB 2026-27 syllabus covers Cell Biology, Genetics, Ecology, Physiology, and Biotechnology as per CBSE curriculum. Questions are concept-based and application-oriented at moderate difficulty.
Archived 20 Jul 2026
IAPT (Indian Association of Physics Teachers) is expected to announce the registration timeline for NSEB 2026-27 cycle soon. Students preparing for the biology olympiad should monitor the official IAPT website for updates on registration dates and eligibility criteria.
Archived 5 Jul 2026
The examination pattern for this cycle continues to emphasize conceptual understanding across all biology domains. Students are advised to strengthen fundamentals in cell biology, genetics, ecology, and plant/animal physiology as per the detailed syllabus available on the IAPT portal.
Archived 5 Jul 2026
Students who qualified through NSEB 2025-26 are currently in various stages of Indian National Biology Olympiad (INBiO) selection process. The orientation camp for national team selection typically occurs in the first quarter of the calendar year.
Archived 5 Jul 2026
Schools intending to register students for NSEB must ensure their coordinator details are updated with IAPT. The examination is conducted at registered school centers, and institutions need to complete enrollment procedures well before the examination date.
Archived 5 Jul 2026
International Biology Olympiad 2027
Wed, 30 Jun, 2027IBO 2027 - final international stage for selected students representing India
Archived 23 Aug 2026
OCSC training camp (tentative)
Sat, 5 Jun, 2027Orientation-cum-Selection Camp at HBCSE, Mumbai for top ~35 finalists
Archived 10 Aug 2026
OCSC-Biology camp (expected)
Sat, 1 May, 2027Two-week Orientation-Cum-Selection Camp at HBCSE for top ~35 INBO performers
Archived 20 Jul 2026
INBiO orientation camp
Sun, 7 Mar, 2027Top performers attend national camp for international team selection
Archived 5 Jul 2026
🏅INBO 2027 (Stage 2) - expected
Mon, 1 Feb, 2027Indian National Biology Olympiad for NSEB qualifiers; typically first Sunday of February
Archived 20 Jul 2026
🏅INBO 2027 exam (tentative)
Mon, 1 Feb, 2027Indian National Biology Olympiad - Stage 2 for NSEB qualifiers; conducted by HBCSE
Archived 23 Aug 2026
🏅INBO 2027 exam (tentative)
Mon, 1 Feb, 2027Stage 2: Indian National Biology Olympiad for top ~300 students
Archived 10 Aug 2026
NSEB results announcement
Wed, 6 Jan, 2027Qualified students eligible for INBiO selection process
Archived 5 Jul 2026
NSEB result announcement (expected)
Sat, 2 Jan, 2027Results typically released in late December or early January; qualifiers advance to INBO
Archived 23 Aug 2026
NSEB result announcement (tentative)
Fri, 1 Jan, 2027Merit list and qualifying candidates for INBO released
Archived 10 Aug 2026
NSEB result & merit list (expected)
Wed, 30 Dec, 2026Scorecard and list of INBO-qualified students published on IAPT website
Archived 20 Jul 2026
Answer key release
Fri, 4 Dec, 2026Provisional answer key published for student reference
Archived 5 Jul 2026
Answer key release (expected)
Sun, 29 Nov, 2026Official solutions released on iapt.org.in within one week of exam
Archived 20 Jul 2026
🏅NSEB examination day
Fri, 27 Nov, 2026Typically held on last Sunday of November
Archived 5 Jul 2026
🏅NSEB 2026-27 Exam Day
Mon, 23 Nov, 2026Offline OMR-based exam; 2:30 PM–4:30 PM; 60 MCQs, 216 marks, 2 hours
Archived 20 Jul 2026
🏅NSEB 2026 exam day
Mon, 23 Nov, 20262:30–4:30 PM; 60 MCQs, 216 marks, 2-hour duration
Archived 10 Aug 2026
🏅NSEB 2026 examination
Sun, 22 Nov, 2026National Standard Examination in Biology; 2:30 PM - 4:30 PM; 2-hour exam covering Class XI-XII Biology
Archived 23 Aug 2026
Admit card release (expected)
Fri, 13 Nov, 2026NSEB 2026 admit cards expected to be available for download before exam date
Archived 23 Aug 2026
Admit card availability
Sat, 7 Nov, 2026Schools can download admit cards for registered students
Archived 5 Jul 2026
Student enrolment deadline
Mon, 14 Sept, 2026Last date for NSEB 2026-27 student registration
Archived 20 Jul 2026
Student enrolment deadline
Mon, 14 Sept, 2026Final date to complete NSEB 2026 registration and pay ₹300 fee; no late registrations
Archived 23 Aug 2026
Student enrolment deadline
Mon, 14 Sept, 2026Last date to complete registration; no late entries accepted
Archived 10 Aug 2026
Registration deadline
Mon, 24 Aug, 2026Final date for schools to submit student registrations
Archived 5 Jul 2026
Student enrolment window opens
Fri, 21 Aug, 2026Individual student registration begins on IAPT portal; fee ₹300
Archived 20 Jul 2026
Student enrolment begins
Fri, 21 Aug, 2026Online registration opens for individual students through centres or IAPT portal
Archived 23 Aug 2026
Student enrolment window opens
Fri, 21 Aug, 2026Students register via school or directly on IAPT portal
Archived 10 Aug 2026
Centre registration closes
Thu, 20 Aug, 2026Last date for schools/institutions to register as NSEB exam centres on iapt.org.in
Archived 23 Aug 2026
Centre registration closes
Thu, 20 Aug, 2026Archived 10 Aug 2026
Centre registration opens (2026-27)
Sat, 1 Aug, 2026Schools and institutions register as NSEB exam centres on iapt.org.in
Archived 20 Jul 2026
Centre registration opens (NSEB 2026–27)
Sat, 1 Aug, 2026Schools must register as exam centres before student enrolment begins
Archived 10 Aug 2026
NSEB registration opens
Thu, 25 Jun, 2026Students register through their school coordinators
Archived 5 Jul 2026
Looking for the current cycle? Back to live NSEB page →