What Class Rank Puts You in the Top 25 Percent?
Rank 100 out of 400 students places you at the 75th percentile, right on the boundary of the top 25% of your class.
How to use this tool
- Enter your class rank (1 = top of the class).
- Enter the total number of students in the class.
- Read your percentile and the top percentage you fall in.
Calculate the percentile rank for a student placing 100th in a class of 400 — the threshold for the top quartile.
Frequently asked questions
- What is the difference between percentile and top percentage?
- Top percentage is simply rank ÷ class size (e.g. top 5%). The percentile rates you against classmates so the top student is the 100th percentile; the two are related but framed oppositely.
- Why divide by class size minus one for the percentile?
- Using (size − 1) places the top student at exactly the 100th percentile and the last at the 0th, spreading ranks evenly across the full 0–100 range.
- My school uses deciles — can I still use this?
- Yes. Enter your numeric rank and class size to get an exact percentile; you can then map it to a decile (top 10% = first decile, and so on).