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High School Grade Average Calculator

Calculates the average, highest, and lowest score from a list of grades.

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Result

Average

82.5

Highest

90

Lowest

75

High School Grade Average Calculator — How It Works

High School Grade Average Calculator — How It Works

Calculates the average, highest, and lowest score from a list of grades.

How it works

  1. Enter a comma-separated list of scores.
  2. The tool calculates the average, highest, and lowest score from the list.

Formula

Average = sum of scores ÷ number of scores

Example

Scores of 80, 90, 75, 85 give an average of 82.5, with a highest of 90 and a lowest of 75.

Why this matters

A quick average of test or assignment scores helps track performance over a term without needing a spreadsheet.

Try the High School Grade Average Calculator — instant results in your browser, no sign-up.

FAQ

Is this free?

Yes — the High School Grade Average Calculator runs entirely in your browser, no sign-up required.

Is this exact?

The calculator performs the math precisely from the numbers you enter, but real-world figures (school fees, screen time policies, reading levels) vary — use the result as a planning guide.

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