CBSE Class 10 Two Board Exams 2027: Complete Guide for Students and Parents

Quick answer: From the 2025-26 session, CBSE Class 10 has two board exams. The first, in February-March, is compulsory for every student. The second, in around May, is optional — you may improve up to three subjects, and the higher score in each subject is the one that counts on your final marksheet. For the Class of 2027, that means two chances, not one.

The facts, in one table

What exactly changed in the CBSE Class 10 exam system?

For decades, CBSE Class 10 worked on a single, unforgiving rule: one exam in February-March, one marksheet, one outcome. A fever in exam week, a bad Maths paper, a chapter you never got to — all of it landed permanently on the same certificate.

Under the two-exam scheme, that stopped being true. Class 10 now has two board exam windows in the same academic year:

• Phase 1 (February-March) — the main board exam. Every student sits it. There is no opting out and no way to skip ahead to Phase 2.
• Phase 2 (around May) — an optional second exam in the same session, for students who want to improve or who need to clear a compartment.

The important part is not that a second exam exists. It is that the better score wins. If you scored 62 in Science in February and 78 in May, your marksheet says 78. A second attempt cannot pull your marks down — it can only hold them or raise them.

This is a genuine shift in how the year should be planned, and most students and parents are still planning as though February is the only date that matters.

When are the two CBSE Class 10 board exams in 2027?

Honest answer: the official 2027 date sheet has not been released yet. Based on how CBSE has scheduled recent years, here is what to expect — and what to treat as provisional until CBSE publishes.

Anyone publishing exact 2027 dates today is guessing. Plan your revision against the expected window, and confirm every date from CBSE’s official circular the moment it lands.

Who has to appear for each exam?

Phase 1 is compulsory for everyone. There is no version of this system where a student sits only the May exam.

Phase 2 is a choice. Broadly, three kinds of students take it:

1. The improver — passed everything, but one or two subjects came in well below what they were capable of, and those marks matter for the stream or school they want.
2. The compartment case — needs to clear a subject to complete Class 10.
3. The near-miss — a percentage sitting just under a cut-off, where five or six marks in two subjects change the outcome.

And one kind of student who should not take it: someone who scored close to their ceiling in February and would be spending April and May re-running a syllabus they have already mastered, instead of starting Class 11. A second attempt has a real cost — two months of a holiday, and the mental load of staying in exam mode. It is worth paying when the marks in question actually change something.

Can you actually improve your marks in the second exam?

Yes — that is precisely what Phase 2 is for. But “improve” is doing a lot of work in that sentence, so be specific about what it takes.

Between the February result and the May exam you have roughly six to eight weeks. That is not enough time to relearn three full subjects from scratch. It is more than enough time to fix the specific chapters that cost you marks — if you know which ones they are.

This is where most second attempts go wrong. A student who scored 62 in Science re-reads the whole Science book, spreads effort evenly across sixteen chapters, and comes out at 66. A student who identifies the four chapters where they actually lost marks, drills those to mastery, and leaves the rest alone comes out much higher — for less total work.

The February marksheet gives you a number. It does not give you the reason. Getting to the reason — chapter by chapter, question type by question type — is the entire job of April.

How many subjects can you improve, and which score counts?

Up to three subjects. Not one, not all five or six. You choose which three.

That constraint is actually useful, because it forces the right question: which three subjects will move my overall percentage the most? That is rarely the three you feel worst about. It is usually:

• the subject where you scored furthest below your own mock-test average (the gap is a fixable one, not a knowledge one),
• the subject with the highest concentration of marks in a few chapters, and
• the subject that matters for the stream you want in Class 11.

On the final marksheet, the higher of your two scores counts in each subject you re-attempt. Your February score is a floor you cannot fall below.

What does this mean for a Class 10 student’s year plan?

Here is the practical version of the change — how a Class 10 student in the 2026-27 session should now think about the calendar.

Note the one rule that matters most: prepare for February as though May does not exist. Students who treat Phase 1 as a practice run walk in under-prepared, score low, and then need a much bigger recovery in six weeks than they would ever have needed in six months. The second exam is a safety net. Safety nets work badly for people who jump on purpose.

What should Class 9 students do differently?

If you are in Class 9 right now, you are the first cohort that gets to plan for this system from the beginning rather than discover it midway.

The practical difference is small but compounding: keep a record of your weak chapters as you go, instead of reconstructing it in a panic in April 2028. Class 9 Science and Maths chapters map directly onto Class 10 ones. A student who knows in Class 9 that they lose marks in numericals rather than theory has an eighteen-month head start on the student who discovers it from a board marksheet.

What should parents decide now, and what can wait?

Almost nothing about the second exam needs deciding in August 2026. Two things do:

Decide now: that February is the real exam in your household. If a child believes there is a free retry, effort in the main attempt drops, and that is the single most expensive mistake available in this system.

Decide now: that you will find out where your child is losing marks while it is still cheap to fix — at mid-terms, not at the board result.

Wait until April 2027: whether to sit Phase 2, and which three subjects. You cannot make that call sensibly without the actual marksheet, and worrying about it for eight months costs your child more than the decision itself.

One more thing worth saying plainly: a second attempt is not a verdict on your child, and it is not something to hide. It is an option CBSE built into the system specifically to make a single bad morning matter less.

What are the three most common mistakes with the two-exam system?

1. Treating February as a rehearsal. It is the exam. May is insurance.
2. Re-reading whole subjects in April. Six weeks rewards precision, not volume. Fix named chapters.
3. Choosing the three subjects emotionally. Pick the three where marks are most recoverable and most useful, not the three that felt worst.

How myAiSchool helps you plan for both exams

Everything above depends on one thing: knowing which chapters are actually costing you marks. That is the problem myAiSchool was built to solve, alongside your school and your teachers — never instead of them.

The free 15-minute Score Map gives you a chapter-wise weak-topic map for your class and subject, plus a predicted score band and the three chapters that will move your marks the most. From there, Gaura — our 24/7 AI tutor — explains those chapters by voice, text or a photo of the sum you are stuck on, Bloom’s-graded competency questions give you fresh practice with no repetition, and a mock test re-scores you on the same map so the improvement is something you can see rather than hope for.

Assess, explain, practise, prove. It is the same loop whether you are preparing for February or deciding what to do in April.

Try it free →

Start free with myAiSchool →

100% free to start — 50 credits, no credit card needed. Paid plans are ₹1,499 (1,499 credits) and ₹2,499 (2,499 credits), with a 7-day refund policy. Cancel anytime.

Frequently asked questions

Is the second CBSE Class 10 board exam compulsory?

No. Phase 1 in February-March is compulsory for every student. Phase 2, around May, is entirely optional — you take it only if you want to improve marks or need to clear a compartment.

Can my marks go down if I take the second exam?

No. In each subject you re-attempt, the higher of your two scores is the one that counts on your final marksheet. Your February score acts as a floor.

How many subjects can I improve in the second exam?

Up to three. You choose which three, so it is worth choosing the ones where marks are most recoverable and most useful for your Class 11 stream.

When will CBSE announce the 2027 date sheet?

It has not been announced as of August 2026. Based on recent years, expect it between October and December 2026, with Class 10 theory papers likely beginning mid-February 2027. Always confirm from CBSE’s official circular.

Does taking the second exam affect college or school admission?

Your marksheet shows the higher score per subject. Schools and colleges look at the marks. That said, admission timelines for some Class 11 seats run before May results are out, so if a specific school’s cut-off is your goal, check that school’s admission calendar before counting on Phase 2.

Should a Class 9 student be doing anything about this now?

One thing: keep a running record of which chapters you consistently lose marks in. Class 9 chapters map onto Class 10 ones, and knowing your weak areas early is worth more than any amount of last-minute planning.

Written by the myAiSchool Academics Team — practising CBSE teachers and curriculum designers who build myAiSchool’s NEP-aligned, NCERT-mapped question banks and assessments for Classes 6-12. We update this page whenever CBSE issues a new circular on the two-exam scheme.

Last updated: 26 August 2026

Related reading

• Class 10 Maths chapter weightage 2026-27 — where the 80 marks actually go, from the official CBSE curriculum.
• The 5 chapters that carry 40% of your mid-term paper — Class 9 to 12, subject by subject.
• Does an AI tutor actually improve marks? — an honest answer, and the cost comparison with coaching.