CAT Normalization Process 2025 - CAT Scaled Score, Composite Score Formula & Percentile Calculation

The CAT is one of the most competitive MBA/PGDM entrance exams in India, taken by lakhs of aspirants each year. Since the exam is conducted in multiple shifts, the difficulty level of each slot may slightly vary. To ensure fairness, the CAT normalization process is used. This process converts your raw marks into a scaled score in CAT. This scaled score is then used for percentile calculation. 

Later, the CAT composite score comes into play during IIM shortlisting and final selection. In this blog, we’ll break down the CAT normalization process 2025 and explain how to calculate CAT score. We also guide you further through the CAT Score Calculator.

What is CAT Normalization Process 2025?

The CAT normalization process is a statistical method used to ensure fairness when the exam is conducted in multiple slots. The CAT exam 2025 will be held in three sessions on the same day. Therefore, the difficulty level of each slot may not be exactly the same. To maintain equality, the raw scores of candidates are scaled and normalized. This is done so that no aspirant is at an advantage or disadvantage due to the slot they appeared in.

In simple terms, normalization in CAT adjusts your raw marks into a scaled score. It’s done by comparing the performance of candidates across different shifts. This scaled score is then used to calculate your CAT percentile. Later, IIMs use this percentile (along with other parameters) to prepare the composite score for shortlisting.

For example:

• If Slot 1 is slightly tougher than Slot 2. A candidate scoring 95 raw marks in Slot 1 might get a higher scaled score compared to a candidate with the same raw score in Slot 2.
• This way, the CAT normalization process 2025 ensures a level playing field.

The official IIM CAT scorecard will display both your scaled scores. Both section-wise and overall, and your percentile rank after normalization.

CAT Scaled Score Explained

When you appear for CAT 2025, the direct marks you get from the exam are called your raw score. However, since CAT is conducted in multiple slots with slight variations in difficulty, IIMs do not use raw scores directly to calculate percentiles. Instead, they use a scaled score in CAT.

So, what is a scaled score in CAT?

A scaled score is your raw score adjusted through the CAT normalization process. This ensures that candidates from different slots are evaluated on an equal footing.

Let’s look at the CAT Composite Score Calculator for WAT-PI issued by IIM Lucknow:

Calculation of Candidate’s scaled score:

The following steps are followed to calculate a candidate’s scaled score for three sections, i.e. VARC, DILR and QA. The overall scaled score is obtained by adding the three sections’ scaled scores.

Here’s how the scaled score is calculated step by step:

1. Mean and Standard Deviation (SD) of raw scores are calculated separately for each session (morning, afternoon, evening).
2. The overall mean and SD for all three sessions combined are also computed.
3. The mean raw score of the top 0.1% candidates in each session is calculated.
4. The mean raw score of the top 0.1% across all sessions is also determined.
5. Using these values, each candidate’s raw score (R) is adjusted using a scaling formula to arrive at the scaled score for that section (VARC, DILR, QA).
6. The overall scaled score is obtained by summing up the scaled scores of all three sections.
7. If the scaled score exceeds 100, it is rounded down to 100.

CAT Percentile Score Calculation 2025

After scaling, IIMs calculate percentile scores to rank candidates. The percentile shows the percentage of candidates who scored less than you.

The steps to calculate the CAT percentile score are as follows:

1. Count the total number of candidates (N) who appeared for CAT across all sessions.
2. Assign a rank (r) to each candidate based on scaled scores. Candidates with the same score get the same rank.
   • Example: If two candidates have the highest score, both get Rank 1. The next candidate gets Rank 3.
3. Use the formula:

1. Round off the percentile score to two decimal places.
   • For instance, a score ≥ 99.995 is rounded to 100, while scores between 99.985 and 99.994 are rounded to 99.99.

Percentiles are reported for each section (VARC, DILR, QA) as well as the overall CAT score, and are the basis for IIM shortlisting.

CAT Composite Score Calculator

Scoring well in CAT is only the first step. While your CAT percentile decides if you get shortlisted, the final admission decision at IIMs is based on the composite score. The CAT composite score is a weighted score that includes your CAT performance along with other academic and personal profile parameters. Each IIM prepares its own formula, but the overall process follows a similar structure.

What is a Composite Score?

A composite score is the final score used by IIMs to shortlist candidates for the Written Ability Test (WAT), Personal Interview (PI), and the final admission list. It is not based on the CAT percentile alone; instead, it combines multiple factors.

Key Components of the IIM Composite Score

1. CAT Scaled Score / Percentile – The biggest weightage (usually 40%–60%).
2. Academic Performance – Marks in Class 10th, 12th, and Graduation.
3. Work Experience – Quality and duration of professional work experience.
4. Diversity Factors – Gender diversity and academic background (non-engineering candidates may get additional points).
5. WAT & PI Scores – For final admission, performance in the Written Ability Test and Personal Interview also carries significant weightage.

How to Calculate Composite Score for IIM?

While the exact formula varies by institute, a typical calculation looks like this:

Composite Score= (CATScore×Weightage)+(Academics×Weightage)+(WorkExperience×Weightage)+(Diversity×Weightage)

Example:
Suppose IIM-X follows this weightage:

• CAT Score = 50%
• Academics = 20%
• Work Experience = 10%
• Diversity = 5%
• PI/WAT = 15%

If Candidate A has:

• CAT Percentile equivalent score = 48/50
• Academics = 16/20
• Work Experience = 8/10
• Diversity = 5/5
• PI/WAT = 12/15

Their Composite Score = 48 + 16 + 8 + 5 + 12 = 89/100

This is the number that finally decides their position in the merit list.

CAT Composite Score Calculators

To calculate the composite score, candidates can use any CAT composite score calculator. IIMs and MBA colleges take into account the following:

• Overall scaled score
• 10th and 12th scores
• Graduation scores
• Gender diversity
• Academic stream
• Work experience

However, do note that the CAT composite score and criteria slightly differ with each IIM.

IIM Composite Score Weightage 2025 (Across IIMs)

Note: Percentages are indicative based on previous years’ admission policies; actual weightages may vary slightly in CAT 2025.