Class Rank Calculator Formula

Understand the math behind the class rank calculator. Each variable explained with a worked example.

Use the Class Rank Calculator

Formulas Used

Percentile Rank

percentile = (1 - (rank - 1) / class_size) * 100

Top Percentage

top_percent = rank / class_size * 100

Students Ranked Below You

students_below = class_size - rank

Variables

VariableDescriptionDefault
rankYour Class Rank15
class_sizeTotal Students in Class350

How It Works

How to Calculate Class Rank Percentile

Class rank percentile shows what percentage of students you outperform.

Formula

Percentile = (1 - (Rank - 1) / Class Size) x 100

Top Percentage = Rank / Class Size x 100

Worked Example

A student is ranked 15th in a class of 350.

rank = 15class_size = 350
  1. 01Top percentage: 15 / 350 x 100 = 4.3%
  2. 02Percentile: (1 - 14/350) x 100 = 96.0%
  3. 03Students ranked below: 350 - 15 = 335

Ready to run the numbers?

Open Class Rank Calculator