JEE Main 2026 Scores Explained: What Is Normalisation And How Percentile Is Calculated?

As students await the JEE Main Result 2026 to be declared by the National Testing Agency (NTA) on April 20, understanding how raw scores are converted into percentiles becomes essential. This important piece of information not only reduces confusion but also helps aspirants interpret their performance more accurately in a highly competitive exam environment.

What Is Normalisation In JEE Main?

To begin with, it is important to understand that the JEE Main examination is conducted in multiple shifts, and each shift has a different question paper. Despite the NTA's best efforts to maintain uniformity across these papers, slight variations in difficulty levels are inevitable. As a result, some candidates may end up attempting a tougher set of questions compared to others.

This difference in difficulty can directly impact scores. For instance, candidates who face a more challenging paper may score lower than those who attempt a relatively easier one, even if their ability levels are similar. Therefore, raw scores alone cannot be used for a fair comparison across different shifts. This is where normalisation comes into play.

Normalisation is a statistical process used by the NTA to ensure fairness. It adjusts scores in such a way that candidates are neither advantaged nor disadvantaged due to the difficulty level of the session they appeared in. Through this method, scores from different shifts become comparable.

How Does The Normalisation Process Work?

The NTA uses a well-defined statistical approach to convert raw scores into normalised scores, also referred to as percentile scores. Several factors are taken into account during this process, including

•The distribution of marks in each session
•The average score of the top 1% of candidates in each shift
•The standard deviation of scores in each session

More specifically, the normalisation is carried out using the Equipercentile method, which ensures that candidates performing at the same level across different sessions receive comparable percentiles.

The process is conducted separately for each subject that is held in multiple shifts and involves the following steps:

Conversion of Raw Scores into Percentile Scores
1. The total number of candidates who appeared in a particular shift is recorded.
2. All candidates in that shift are arranged in descending order based on their raw marks.
3. The raw marks of each candidate are noted, along with the total number of candidates in that session.
4. The percentile score is then calculated using the formula.

JEE 2026 Percentile Calculation Formula

Percentile Score = 100 × (Number of candidates who scored equal to or less than the candidate) ÷ (Total number of candidates in that session)

The percentile is calculated up to seven decimal places. This high level of precision helps reduce the chances of ties and ensures a more accurate ranking process.

In conclusion, the percentile-based system adopted by the NTA plays a crucial role in maintaining fairness and transparency in the JEE Main examination. By understanding how normalisation works, students can better interpret their results and avoid unnecessary confusion during the result season.