Hong Life CalculatorsHow it is calculated
- Top percent = rank ÷ class size × 100. Rank 25 of 400 → 25 ÷ 400 = 6.25% (top 6.25%).
- Percentile rank = (class size − rank) ÷ class size × 100 → (400 − 25) ÷ 400 = 93.75: you are ranked above 93.75% of the class.
- Decile / quartile: the 10% or 25% band your top-percent falls in.
| Rank / class size | Top % | Percentile rank |
|---|---|---|
| 1 / 300 | 0.333333% | 99.6667 |
| 10 / 250 | 4% | 96 |
| 25 / 400 | 6.25% | 93.75 |
| 50 / 500 | 10% | 90 |
| 75 / 300 | 25% | 75 |
| 150 / 600 | 25% | 75 |
Many high schools no longer report rank. When an application asks for it and your school does not rank, leave it blank or follow your counselor’s instructions.
FAQ
How do I calculate my class rank percentage?
Divide your rank by the number of students in your class and multiply by 100. Rank 25 of 400 is the top 6.25%.
Is “top 10%” the same as the 90th percentile?
Roughly. Top 10% means rank ÷ class size is 10% or less; that puts you at or above the 90th percentile rank.
What if my school does not rank students?
Colleges then rely on your transcript and the school profile. Do not estimate a rank yourself on an application.
Sources (Checked Nov 10, 2026): simple ratio definitions (rank ÷ class size; share of the class ranked below you). Estimate only, not an official rank.