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⏰ URGENT — Window Closes 25 June 2026
NIOS Class 12 rechecking and revaluation for the April 2026 session opened on 10 June 2026 and closes on 25 June 2026. If you are unsatisfied with your marks, apply at sdmis.nios.ac.in before the deadline. Applications after June 25 will not be entertained for this session.
You expected better marks. Maybe you were 2 marks short of passing. Maybe the totalling felt off. Whatever the reason, NIOS gives you a formal option to challenge the result — through rechecking (verification of marks totalling) and revaluation (full re-evaluation of your answer script for Class 12). But the window is short and the process is specific. This guide walks you through exactly what each option does, who can apply, and how to submit your application before the June 25 deadline closes.
Table of Contents
⚡ Quick Facts — NIOS Rechecking & Revaluation 2026
These two terms are often used interchangeably, but they are different processes with different purposes and different outcomes. Understanding which one you need before applying saves time and avoids mistakes.
| Feature | Rechecking | Revaluation |
|---|---|---|
| What it checks | Totalling errors, unevaluated answers, marks transfer errors | Full re-evaluation of the answer script by a senior examiner |
| Available for | Class 10 and Class 12 — theory subjects only | Class 12 only — theory subjects only. Not available for Class 10. |
| Risk of marks decreasing | Yes — marks can increase or decrease | Yes — but original marks are kept if re-evaluated marks are lower |
| Best used when | You suspect a calculation or totalling error | You believe your answers were marked incorrectly — evaluation itself was wrong |
| Result timeline | Within 60 days of application receipt | Within 60 days of application receipt |
Which should you choose? If you scored 31 out of 33 and suspect a totalling mistake — choose rechecking. If you are a Class 12 student who scored significantly lower than expected and genuinely believe the examiner missed marking complete answers — choose revaluation. Class 10 students only have rechecking as an option; revaluation is not available at the secondary level.
⚠ Critical Rule: No rechecking or revaluation for practical answer scripts, under any circumstances. This applies to both Class 10 and Class 12. If your low score is in a practical subject, rechecking is not an option for that component.
| Event | Date | Action Required |
|---|---|---|
| NIOS Class 12 Result 2026 Declared | June 2026 | Check result at results.nios.ac.in |
| Rechecking / Revaluation Window Opens | 10 June 2026 | Apply at sdmis.nios.ac.in |
| Rechecking / Revaluation Window CLOSES | 25 June 2026 | No applications after this date |
| Result Correction (Name/DOB errors) | Within 30 days of result declaration | Login to sdmis.nios.ac.in → Apply for correction |
| Rechecking / Revaluation Result | Within 60 days of application receipt | Check at results.nios.ac.in or sdmis.nios.ac.in |
For October/November 2026 exam students: The rechecking window for the October session is expected to open in December 2026, after results are declared. The same 15-day application rule applies. Monitor sdmis.nios.ac.in and nios.ac.in for the official announcement.
Go to results.nios.ac.in and log in using your enrollment number. Download and review your marksheet carefully before applying. Note which subjects you want to challenge and whether you need rechecking, revaluation, or both.
Visit sdmis.nios.ac.in and log in to your student dashboard using your enrollment number and password.
On your student dashboard, look for the “Apply for Recheck / Revaluation” link. The portal activates this section only during the official application window (currently 10–25 June 2026 for April 2026 results). If you do not see the link, check whether the window is still open.
Select the subjects for which you want rechecking, revaluation, or both. You can apply for multiple subjects in a single session. Choose carefully — once submitted, the application cannot be changed.
Pay the applicable fee per subject via the payment gateway on the portal. The fee amount is displayed on screen before you confirm — verify it there before paying. Save your payment receipt and transaction ID. These will be needed for any future queries about your application status.
Submit your application and download the confirmation receipt. This is your proof of application. Keep it until your revised result is published.

This is what most students want to know. Here are the exact rules — not general advice:
Practical guidance: If you are 2–5 marks away from passing and believe a calculation error occurred, rechecking is the right tool. If you are further away and genuinely believe entire questions were left unmarked during evaluation, revaluation is the appropriate option. Be realistic — revaluation outcomes vary and a full re-evaluation does not guarantee a significant increase.
NIOS does not publish a specific result date for individual rechecking/revaluation cases. The official timeline is: results will be shared within 60 days of the date of receipt of the application. This means:
During this 60-day window, do not delay your next steps (re-appearing for the subject in October, or planning for the next exam cycle). Act on both tracks simultaneously — apply for rechecking AND prepare for the October exam as a parallel plan.
Rechecking is not guaranteed to change your result. If you are still short after the process, here are your concrete options — ranked by how quickly they get you to your certificate.
This is the fastest path for most students. You only need to reappear in the subject(s) you failed — not all 5. NIOS allows up to 9 attempts within a 5-year validity period. Registration for the October 2026 exam session is currently open. Check the NIOS exam date guide for the upcoming theory timetable.
ODE lets you choose your own exam date — available most months except April/May and October/November (public exam months). If you want to clear a failed subject faster than October, ODE is a viable option. Check eligibility and registration at NIOS On-Demand Exam registration guide. Also compare: NIOS On-Demand vs Public Exams.
If you passed some subjects but failed others, and you need to re-enroll, the TOC facility lets you carry forward your passing subjects into a fresh NIOS enrollment. You do not start from scratch. Read the full guide on what TOC is in NIOS to understand this option.

No. Revaluation (full re-evaluation of the answer script) is available only for Class 12 (Senior Secondary) students. Class 10 students can only apply for rechecking — which verifies that all answers were marked and totalled correctly. This is an official NIOS rule and applies to all public exam sessions.
For rechecking: yes, marks can increase or decrease after the verification process. For revaluation (Class 12): if the re-evaluated marks are lower than your original marks, the original marks are retained. Your certificate marks will never go below what was originally awarded through the revaluation process — but rechecking does not have this protection.
NIOS shares rechecking and revaluation results online. Log in to your student dashboard at sdmis.nios.ac.in or check results.nios.ac.in. The result is typically available within 60 days of your application date. NIOS does not notify students by SMS or email for rechecking results — you must check the portal actively.
Yes. For Class 12 students, you can apply for both rechecking and revaluation for the same subject in the same session. Most students choose one or the other based on whether they suspect a calculation error (rechecking) or an evaluation error (revaluation). Check the portal at sdmis.nios.ac.in for the current process when you apply.
Yes. The rechecking window in this guide (June 10–25, 2026) applies specifically to the April 2026 public exam session results. For the October/November 2026 exam, results are expected in December 2026, and the rechecking window will open after that. The same 15-day application rule applies. Monitor nios.ac.in for the official notification.
The NIOS rechecking and revaluation window for April 2026 results closes on 25 June 2026. If you have even a reasonable doubt about your marks — especially if you are close to the passing threshold — apply before the deadline. Missing this window means waiting until the next exam cycle to address it.
At the same time, do not put your entire plan on hold waiting for a rechecking result. Register for the October 2026 exam as a parallel track. Whether rechecking helps or not, having October registration in place ensures you are not waiting an extra six months. And if you want to understand your broader options after a difficult result, read our guide on whether marks increase in NIOS revaluation.
All processes, deadlines, and applicable fees should be confirmed directly at the official NIOS portal: sdmis.nios.ac.in and nios.ac.in.
Don’t Miss the June 25 Rechecking Deadline
Apply for NIOS rechecking or revaluation at the official portal now — and register for the October 2026 exam as your parallel plan.
→ Apply for Rechecking at sdmis.nios.ac.in
→ NIOS October 2026 Exam Dates — Check Now
→ Register for October 2026 Exam Cycle — UAE Admission
→ Contact NIOS World — Get Guidance
Always verify current deadlines and process at nios.ac.in
