Normalisation and Cut-Off Marks Explained in Simple Words
When a recruitment exam is held in many shifts over several days, not every shift gets an equally difficult paper. One shift may get a tricky maths section and another an easy one. Normalisation is the method used to make scores from different shifts comparable. Cut-off marks are the scores that decide who moves to the next stage. Both cause a lot of confusion, especially when a candidate's "normalised score" is different from the raw score they calculated from the answer key. This guide explains both ideas in simple language, using the rules published by the Staff Selection Commission (SSC).
Raw Score vs Normalised Score
Your raw score is what you get by adding marks for correct answers and subtracting negative marks for wrong ones. In SSC CHSL and CGL Tier-I, each question carries 2 marks and 0.50 marks are deducted for each wrong answer. You can usually work out your raw score from the answer key and your response sheet.
Your normalised score is the score after the adjustment for shift difficulty. In SSC exams held in multiple shifts, the normalised score, not the raw score, is used for merit and cut-offs. The CHSL 2026 notice says marks in a multi-shift computer-based exam "will be normalized" using the procedure published by the Commission in its notice dated 02-06-2025, and that these normalised scores will be used to determine final merit and cut-off marks.
Why Normalisation Is Needed
Imagine two friends of equal ability. One writes the exam on Monday morning, when the paper happens to be hard. The other writes on Wednesday evening, when the paper happens to be easy. Without any adjustment, the Wednesday candidate would score higher only because of luck. Normalisation tries to remove that luck, so that candidates are compared on ability rather than on which shift they were given.
How SSC Normalises Now: The Equipercentile Method
SSC published a revised normalisation procedure on 2 June 2025 and moved to what is called the equipercentile method. SSC has explained that its earlier method adjusted scores using things like the top scores, the average and the spread of marks in each shift. The equipercentile method works on ranks within a shift instead.
The three official steps, in plain words
- Percentile within your shift. For each shift separately, SSC counts how many candidates in that shift scored less than or equal to your raw score, and divides by the number of candidates who appeared in that shift. If 8,000 out of 10,000 candidates in your shift scored at or below you, your percentile is 0.8, or the 80th percentile.
- Find the matching score in every other shift. All shifts are put into one table sorted by percentile. For your percentile, SSC finds the raw score that represents the same percentile in each of the other shifts. Where no candidate has exactly that percentile, the score is estimated by linear interpolation between the nearest scores above and below.
- Average them. Your normalised score is the average of these equivalent raw scores across all the shifts.
So suppose you were in a hard shift and scored 120 out of 200, but that put you ahead of most of your shift. Your normalised score reflects your strong relative position, because it is built from the scores that candidates at the same percentile got in the other shifts. It is not held down by the hard paper. The numbers here are only an illustration. The official notice includes the full formulas and a worked example.
Note: Normalisation can move your score up or down compared with your raw score. A change is not an error. It is the effect of your shift's difficulty and how others in your shift performed.
What Is a Cut-Off?
A cut-off is the lowest score with which a candidate is shortlisted for the next stage or selected in the final list. Cut-offs are decided after the exam, based on the number of vacancies, the number of candidates, and how they performed. They are usually announced category-wise, and sometimes post-wise.
The SSC CHSL 2026 notice, for example, says there may be separate category-wise cut-offs in Tier-I and later tiers for different posts:
- DEO and DEO Grade 'A' in the department named in the notice
- DEO and DEO Grade 'A' in other departments
- LDC/JSA
Minimum Qualifying Marks Are Not the Same as Cut-Offs
This is the most common confusion. SSC sets minimum qualifying marks. These are the least you must score to be considered at all. In both the CHSL 2026 and CGL 2026 notices they are:
| Category | Minimum qualifying marks |
|---|---|
| Unreserved (UR) | 30% |
| OBC / EWS | 25% |
| All other categories | 20% |
The cut-off is usually far above these minimums, because there are many more qualified candidates than vacancies. Scoring 30% as a UR candidate only means you are not disqualified outright. To be shortlisted, you need to reach the cut-off, which depends on competition.
Some sections are only qualifying. You must clear them, but their marks are not added to merit. In CHSL 2026, the Computer Knowledge Test and the Skill/Typing Test in Tier-II are qualifying, and final merit is based on Sections I and II of Tier-II.
Tie-Breaking
When two candidates have the same score, notices give a tie-breaking order. In SSC CHSL 2026, ties in Tier-II are resolved in this order:
- marks in Section-I of Tier-II
- marks in Tier-I
- date of birth, with older candidates placed higher
How to Estimate Your Chances Sensibly
- Calculate your raw score honestly using the official tentative answer key and your response sheet.
- Do not compare raw scores across shifts on social media. A 140 in one shift may not equal a 140 in another.
- Look at previous official cut-offs published by the recruiting body as a rough guide, not a promise. Vacancies and competition change every year.
- Prepare for the next stage anyway. The gap between Tier-I and Tier-II is short. Candidates who wait for the result often lose valuable time.
Answer Keys and Objections
SSC publishes tentative answer keys after the exam. In the CHSL 2026 notice, candidates could raise online objections for ₹50 per question, which is non-refundable. The MTS 2025 notice set ₹100 per question. Objections are checked before the final key is made, and the final key is used to calculate results. SSC notices also say there is no re-evaluation or re-checking of scores. So if you believe a question is wrong, use the objection window, because there is no later stage to raise it.
Frequently Asked Questions
Why is my normalised score lower than my raw score?
Your shift was probably easier than average, or many candidates in your shift scored well. Normalisation adjusts for this so that candidates from harder shifts are not at a disadvantage.
Is normalisation applied in every exam?
Only when an exam is held in more than one shift. A single-shift exam has no need for it. Each notice states whether and how it applies.
If I get the minimum qualifying marks, will I be selected?
Not necessarily. Minimum qualifying marks only make you eligible to be considered. Selection depends on the cut-off, which is usually higher.
Can I ask SSC to recheck my answer sheet?
No. SSC notices say there is no provision for re-evaluation or re-checking. Your only route is the objection window for the tentative answer key.
Are cut-offs the same for all posts in one exam?
Not always. Notices like SSC CHSL 2026 allow separate cut-offs for different groups of posts and for each category.
Sources and Last Checked
Checked on 01 October 2026:
- SSC, Normalization procedure for SSC exams from June 2025: ssc.gov.in
- SSC CHSL 2026 notice, paras 13 and 17 to 18: ssc.gov.in
- SSC CGL 2026 notice, para 16: ssc.gov.in
- SSC MTS and Havaldar 2025 notice, para 14.5: ssc.gov.in
This guide explains the general idea. The official normalisation notice is the final authority on the method.