The single most important rule to remember: you must score at least 33% in the theory paper AND at least 33% in internal assessment separately — scoring 33% overall is not enough on its own. This is the point that trips up the most students and parents every year, so let’s clear it up first.
How Marks Are Split Between Theory and Internal Assessment
For most core Class 10 subjects (Hindi, English, Mathematics, Science, Social Science), the total 100 marks are divided as:
- 80 marks — the board theory exam (a 3-hour paper, evaluated externally)
- 20 marks — internal assessment/practicals (evaluated at the school level)
In Class 12, the split varies by subject. Subjects with a formal practical component (Science subjects, Computer Science, and similar) typically follow a 70 marks theory + 30 marks practical/internal pattern, while many non-practical subjects still use the 80+20 structure. The exact split for each subject is fixed in CBSE’s curriculum document for that subject, so always check the specific subject scheme on the CBSE website or with your school rather than assuming one split applies everywhere.
Minimum Marks Needed to Pass
The rule itself is simple, but it needs to be read carefully: you must clear 33% in theory and 33% in internal assessment independently.
- In an 80-mark theory paper, you need at least 27 marks to pass.
- In a 20-mark internal assessment, you need at least 7 marks to pass.
- In 70+30 subjects (common in the Class 12 Science stream), you need at least 23 marks in theory and 10 marks in practicals.
This means a student who scores 30 in theory but only 5 in internal assessment will still fail that subject, even though the combined total (35) crosses 33% — because the internal component was not cleared on its own. Passing is decided subject by subject; there is no separate “overall aggregate percentage” requirement across all subjects — each subject has to be cleared independently.
How the 9-Point Grading Scale Works
CBSE’s grading is not based on fixed mark ranges (such as 91-100 = A1). It is a positional, relative system: every student who passes a given subject is ranked nationally by marks, and grades are assigned by where a student falls in that ranking — the top one-eighth get A1, the next one-eighth get A2, and so on.
| Grade | Position among passed students | Grade Point |
|---|---|---|
| A1 | Top 1/8th | 10 |
| A2 | Next 1/8th | 9 |
| B1 | Next 1/8th | 8 |
| B2 | Next 1/8th | 7 |
| C1 | Next 1/8th | 6 |
| C2 | Next 1/8th | 5 |
| D | Remaining passed students | 4 |
| E | Below 33% (Fail / Essential Repeat) | — |
Because grades depend on how everyone in the country performed that year, the same marks can translate into a slightly different grade in different years — your grade reflects your relative standing, not just your raw score.
Converting CGPA to Percentage
On the Class 10 marksheet, CGPA is calculated as the average of the grade points from a student’s best five subjects. CBSE’s indicative formula to convert this into an approximate percentage is:
Percentage ≈ CGPA × 9.5
For example, a CGPA of 9.2 works out to roughly 87.4%. This formula is meant to give an indicative figure — schools and institutions typically use this same calculation when an official percentage is required for admissions.
Does CBSE Still Declare an Overall Division or Merit List?
No. CBSE stopped declaring an official list of toppers or merit rankings back in 2003, and it does not print a “First/Second/Third Division” label on the marksheet. The Class 10 result is reported as grades and CGPA rather than a straightforward percentage, while the Class 12 marksheet lists subject-wise marks from which students can calculate their own percentage — but there is no official overall division or rank declared by CBSE in either case.
What’s New for the 2026-27 Session
From the 2026-27 session, Class 10 continues under CBSE’s twice-a-year board exam structure. The first examination is compulsory for all students, while the second is optional and available only for subjects where the external (theory) component exceeds 50 marks. Internal assessment and practicals are conducted only once, and those marks carry over to both attempts. The better of the two scores is used for the final result. Class 12 continues to have a single annual board examination for now.
The rules can sound complicated on paper, but the takeaway is simple: clear 33% in both theory and internal assessment for every subject, and the grading will take care of itself. Keep up the steady effort — you’ve got this!
Keep exploring: test yourself with previous years’ question papers here.