CBSE passing marks: what the rules actually say
To pass a CBSE Class 10 subject, a student needs 33%, across the board paper and the school marks. CBSE's exact rule, and what comes next.
To pass a CBSE Class 10 subject, your child needs at least 33%. Most subjects have an 80-mark board paper and 20 school marks. CBSE's 2026-27 curriculum asks for 33% "separately in external and internal assessments, calculated on the combined total" of the two. We quote its words rather than read them one way.
What are the passing marks for CBSE Class 10?
The passing marks are 33% in each subject. Most subjects carry 100 marks. Eighty come from the board paper, the written exam CBSE sets and marks. Twenty come from the school, through internal assessment - the school's own tests and projects across the year.
The rule for 2026-27 is in CBSE's Secondary Curriculum, Part 1. It says a student must get "a minimum of 33% marks separately in external and internal assessments, calculated on the combined total of Internal Assessment and External Examination marks". External means the board paper. Internal means the school marks.
How many marks out of 80 do you need to pass?
33% of 80 is 26.4, a little over 26 marks. 33% of the 20 school marks is 6.6, a little over 6. Those are the numbers if the 33% is taken on each part.
The same sentence also speaks of the combined total, and CBSE gives no worked example. So if your child's marks in a subject are close to the line, ask the school how CBSE will work out that subject.
Are theory and internal marks passed separately in CBSE?
CBSE's curriculum uses the word "separately" for the board paper and the school marks. The same sentence says the 33% is "calculated on the combined total". CBSE does not show how the two fit together, so this page gives its words, not our reading of them.
What is clear is that each subject has the two parts, and both count. The school can tell you where your child stands in each.
The school marks are also fixed early. Under the two-exam system they are given once, before the February exam. So they are the part to watch during the year, not after it. How the 20 school marks are made up shows each piece.
What happens if you fail one subject in CBSE Class 10?
The result for that subject is shown as Compartment - CBSE's word for a subject still to be cleared. It is a result with a next step, not an end. From 2026, Class 10 has two board exams in one year, and the second one is in May.
CBSE's notification on the two board exams lets a student with a Compartment result sit the second exam in the compartment category. So a subject not cleared in February can be taken again in the same year. That is the compartment exam.
The chances, the form and the fee are set out in what happens after a CBSE Class 10 compartment result.
- A sixth subject can step in. If your child fails one of Science, Maths or Social Science but passes an optional sixth subject, the sixth subject can take its place. CBSE's scheme adds conditions about the languages studied.
- Three or more papers missed is different. A student who did not sit three or more subjects in February cannot sit the second exam. CBSE calls this Essential Repeat. The student takes the main exam the next February.
- Improvement is open too. A student who passed can use the second exam to try for a better mark in up to three subjects. Whether your child should sit the second board exam walks through that choice.
Does CBSE give grace marks in Class 10?
We could not find grace marks in the CBSE documents we checked for this page. Those were the 2026-27 curriculum and the two-exam notification. Neither gives a number of extra marks for a student close to passing.
So we do not print one. If someone quotes a figure, ask which CBSE circular it comes from. Plan on the rule that is written down: 33% of each part.
What are the passing marks for ICSE Class 10?
ICSE also sets 33%. The CISCE regulations for the ICSE exam say "the pass mark for each subject is 33%". The school's internal assessment marks are added to the written exam marks for each subject.
To get the pass certificate, a student must pass at least five subjects, and English must be one of them. The student also needs a pass grade in SUPW and Community Service, which the school assesses.
ICSE has its own improvement exam in the same year. A student can sit up to three subjects again, and the higher of the two marks counts. These rules are from CISCE's latest published edition, the one for the 2028 exam. Check the edition for your child's exam year.
What if the marks look wrong after the result?
CBSE lets you ask for a copy of the marked answer book, a check of the totals, and a fresh look at chosen answers. Photocopy, verification and re-evaluation explains each one. For Class 10 they open only after the second exam's results.
Before you pay for any of them, read whether re-evaluation is worth it. The answer depends on what the copy of the paper shows.
What can a family do before February?
- Ask the school about the school marks early. They are earned in pieces across the year. A low score in one subject is best known in November, not in May.
- Look at the weakest board paper, not the weakest total. The total hides which part is short. The board paper is the part your child can still practise for.
- Treat 33% as the floor, not the target. A child aiming only at the line has no room for a misread question or a section left unfinished.
- Learn how marks are given for each step. Marks are given for each step, so a step not written down cannot earn its mark. How step marking works shows where they go.
The rules are written down for a reason. They are not there to catch anyone out. They are just rarely explained where a worried family would look.
Sources
Facts last checked against these sources on 30 September 2026.
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