Enter the Step 2 score, mean Step 2 score, and standard deviation of Step 2 scores into the calculator to determine the percentile rank.

## Step 2 Percentile Formula

The following formula is used to calculate the Step 2 Percentile.

P = (S - M) / SD

Variables:

- P is the percentile rank
- S is the Step 2 score
- M is the mean Step 2 score
- SD is the standard deviation of Step 2 scores

To calculate the Step 2 Percentile, subtract the mean Step 2 score from the individual’s Step 2 score. Then, divide the result by the standard deviation of Step 2 scores. The result is the percentile rank, which indicates the percentage of scores in its frequency distribution that are equal to or lower than it.

## What is a Step 2 Percentile?

A Step 2 Percentile is a scoring system used in medical education, specifically for the United States Medical Licensing Examination (USMLE) Step 2 Clinical Knowledge (CK) test. It ranks a student’s score against others who took the same exam, providing a percentile that shows how a student’s score compares to others. For example, if a student is in the 90th percentile, it means they scored higher than 90% of test takers. This percentile is often used by residency programs to compare applicants.

## How to Calculate Step 2 Percentile?

The following steps outline how to calculate the Step 2 Percentile using the formula: P = (S – M) / SD

- First, determine the Step 2 score (S).
- Next, determine the mean Step 2 score (M).
- Next, determine the standard deviation of Step 2 scores (SD).
- Next, use the formula P = (S – M) / SD to calculate the percentile rank (P).
- Finally, calculate the Step 2 Percentile.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

Step 2 score (S) = 85

Mean Step 2 score (M) = 75

Standard deviation of Step 2 scores (SD) = 10