Class Average Calculator
Paste your grade list and instantly get the class mean, median, high, low, standard deviation, pass rate, and a full letter grade distribution — everything you need for a grade report or parent conference.
What This Calculator Computes
Mean (class average) — The sum of all grades divided by the number of students. This is the standard "class average" reported on progress reports and grade summaries.
Median — The middle value when grades are sorted. Useful when a few extreme outliers would skew the mean. If the median is noticeably higher than the mean, a small number of very low scores are pulling the average down.
Standard deviation — How spread out the grades are. A low standard deviation means most students scored close to the average. A high one means wide variation — some students may need additional support while others need enrichment.
Pass rate — The percentage of students who scored 60 or above. Useful for identifying whether a test was appropriately difficult or needs to be curved.
Grade distribution — Counts of A, B, C, D, and F grades, so you can see the shape of the distribution at a glance.
Interpreting Results
| Situation | What to consider |
|---|---|
| Mean much lower than median | A few very low scores are dragging the average down |
| High standard deviation | Wide skill range — consider differentiation or re-teaching |
| Pass rate below 70% | Assignment may have been too difficult; consider a grade curve |
| Most grades clustered in one bucket | Assessment may lack discriminating power |
Frequently Asked Questions
What format should I enter grades in?
Any combination of numbers separated by spaces, commas, or new lines. Decimals are supported. Labels and non-numeric text are ignored.
Does this work for scores not on a 100-point scale?
Yes. Enter any numeric scores — 50-point scales, raw point totals, whatever your gradebook uses. The statistics are correct for any numeric set. Note that the letter grade distribution (A/B/C/D/F) assumes a 100-point scale.
What counts as passing?
The pass rate uses 60 as the cutoff by default, which is the standard in most US grading systems.
Is my data saved anywhere?
No. All calculations happen locally in your browser. Nothing is sent to a server or stored between sessions.
Can I use this with weighted grades?
No — this calculator treats all scores equally. For weighted grades, multiply each score by its weight before entering, or enter the final weighted score per student. If a student needs to know what score they need on an upcoming final, the final grade calculator handles weighted course structures directly.
