CBSE Class 10 & 12 2026: Know the Difference Between Supplementary, Improvement and Compartment Exams
Confused between CBSE supplementary, compartment, and improvement exams? Here's how the options differ for Class 10 and Class 12 students under the 2026 examination rules, along with eligibility and key guidelines.The Central Board of Secondary Education has introduced revised examination provisions for 2026, leading to confusion among students regarding supplementary, compartment, and improvement exams. While the terms are sometimes used interchangeably, the eligibility rules differ for Class 10 and Class 12.
What Is a Supplementary/Compartment Exam?
A supplementary (or compartment) examination gives students who could not clear one or more subjects in the main board examination another opportunity to pass without losing an academic year. CBSE now commonly uses the term Supplementary Examination for this second chance.
Class 10: Two Opportunities Under the New System
From 2026, CBSE has introduced a two-board examination system for Class 10.
- The first board exam is mandatory.
- The second board exam is optional.
- Students can use the second attempt to improve marks or clear eligible compartment subjects.
- The better score of the two attempts is considered for the final result.
Class 12: Supplementary and Improvement Exams
For Class 12, the board continues with a supplementary examination after the declaration of results.
Students may appear if they:
- Are placed in the compartment category, or
- Have passed but wish to improve their marks in one subject.
The Class 12 Supplementary Examination 2026 is scheduled to be held on July 15, 2026, with schools submitting the List of Candidates (LOC) to CBSE.
Improvement Exam: Who Can Apply?
An improvement examination is meant for students who have already passed the board examination but want to secure higher marks.
- Class 10: Students can improve their performance through the second board examination under the new system.
- Class 12: Students who have passed may appear in the supplementary examination to improve marks in one subject, subject to CBSE rules.
Key Differences at a Glance
| Feature | Class 10 | Class 12 |
|---|---|---|
| Second exam | Yes, under the two-board system | Supplementary exam after results |
| Improvement option | Through the optional second board exam | Available in one subject after passing |
| Compartment/Supplementary | Eligible students can clear failed subject(s) in the second attempt | Eligible compartment candidates appear in the supplementary exam |
| Best score rule | Higher score of the two attempts is retained | Not applicable |
Important Advice for Students
Students should:
- Carefully check their eligibility before applying.
- Apply through their schools if they are regular candidates.
- Follow the official CBSE schedule for registration and examination dates.
- Read the latest CBSE circulars to understand the rules applicable to their category.
For the latest notifications, schedules, and application details, students should visit the official CBSE website: