What is the standard deviation in grading?

Standard deviation measures how much students' scores vary from the average. A high standard deviation means scores are widely spread out, whereas a low standard deviation means student performances are very similar.

Why is the median grade useful?

The median represents the exact middle student. It is less sensitive to extreme outliers (like a single student getting a 0% or 100%) than the standard mean average.

Can I copy and paste scores directly?

Yes! Our parser accepts copy-pasted scores from Excel sheets, text documents, or gradebooks separated by any standard character.

Education Tool

Class Average Calculator

Calculate average test scores or class grades. Generates statistical indicators including mean, median, standard deviation, and letter grade spreads.

Interactive Class Average Calculator Workspace

Live Solver

Paste Student Grades (separators: commas, spaces, or lines)

Class Statistical Distribution

Mean Score83.5%

Median Score85.0%

Score Span68% − 95%

Std. Deviation±8.6

Sample Count8

Letter Grade Distributions

3 (38%)

2 (25%)

1 (13%)

0 (0%)

Mathematical Formula & Variables

Equation ModelAverage (Mean) = Sum of All Scores ÷ Count of Scores

Calculates the arithmetic average score of a group of students. Also evaluates dispersion indices to gauge class-wide assessment difficulty.

Variable Definitions

Symbol	Description
Mean	The mathematical center average score
Count	The total number of students graded

How to Use the Class Average Calculator

Type or paste your student scores (separated by commas, spaces, or line breaks).
Optionally input student scores individually in rows.
Instantly check the mean score, median grade, range, standard deviation, and grade distribution curves.