Step 1 Percentile Calculator

Calculate Step 1 Percentile





Formula

The formula to calculate the Step 1 Percentile (P) is:

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

Where:

What is Step 1 Percentile?

A Step 1 Percentile is a scoring system used in the United States Medical Licensing Examination (USMLE) Step 1. It ranks a student's performance in comparison to their peers. For example, if a student is in the 90th percentile, it means they scored higher than 90% of test takers. This percentile is used by residency programs to compare applicants and determine their knowledge in basic science material.

Example Calculation

Let's assume the following values:

Using the formula to calculate the Step 1 Percentile (P):

\[ P = \frac{S - M}{SD} = \frac{240 - 230}{20} = \frac{10}{20} = 0.50 \]

The Percentile Rank (P) is 0.50.