Step 2 Percentile Calculator

Formula

To calculate the Step 2 Percentile:

\[ P = \frac{S - M}{SD} \]

Where:

\(P\) 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

Step 2 Percentile Definition

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.

Example Calculation 1

Let's assume the following values:

Step 2 Score (\(S\)) = 240
Mean Step 2 Score (\(M\)) = 230
Standard Deviation (\(SD\)) = 10

Using the formula:

\[ P = \frac{240 - 230}{10} = 1.00 \]

The Step 2 Percentile is 1.00.

Example Calculation 2

Let's assume the following values:

Step 2 Score (\(S\)) = 250
Mean Step 2 Score (\(M\)) = 230
Standard Deviation (\(SD\)) = 10

Using the formula:

\[ P = \frac{250 - 230}{10} = 2.00 \]

The Step 2 Percentile is 2.00.