Marks Moderation Calculator
When a paper runs hard, estimate a fair flat boost (capped) so the class mean moves toward your target.
- 100% free
- No sign-up required
- Runs in your browser
- JSON API for agents
Moderation result
- 1.Original mean = 42.43
- 2.Boost = min(8, max(0, 50 − mean)) = 7.57
- 3.Moderated mean = 50 (capped at 80)
Moderated: 39.57, 48.57, 35.57, 62.57, 67.57, 44.57, 51.57
Live
Stats update
Cap
Max boost respected
Math
Steps shown
How moderation is calculated
Each block explains one part of how this works and how to read the result.
Flat boost toward target mean
Enter comma-separated raw scores, target mean, maximum marks, and a max boost cap.
If the class mean is already at or above the target, boost is 0. No score exceeds max marks after moderation.
Source
Illustrative flat-boost moderation: boost = min(maxBoost, max(0, targetMean − classMean)); moderated = min(maxMarks, raw + boost). Official board moderation tables differ — use only as an internal planning aid.
Frequently asked questions
Is this official CBSE/ICSE moderation?
No. Boards publish their own policies. This models a simple internal adjustment teachers sometimes use for unit tests.
Why cap the boost?
Unlimited boosts inflate grades unrealistically. A 3–8 mark cap is a common planning range for school tests.
Does it change rank order?
A flat boost preserves order (ties remain ties) unless scores hit the max-marks ceiling.
Can I moderate only failing students?
Not in this mode — it applies the same boost to all. Filter scores externally if you need a subset.
Related teacher & school planning tools
More free calculators and formats in the same lane.
For developers & AI agents
The Marks Moderation Calculator is also available as a free, unauthenticated JSON API — no API key, no sign-up, CORS enabled for all origins. Send a GET request with the parameters below and receive the computed result as JSON, including the source of the format or formula used. Invalid input returns HTTP 400 with a JSON { "error": "..." } body.
GET https://knwdle.com/api/tools/marks-moderation-calculator| Parameter | Required | Description |
|---|---|---|
scores | Yes | Comma-separated raw scores |
targetMean | Yes | Desired class mean after moderation |
maxMarks | Yes | Maximum marks for the test |
maxBoost | No | Maximum flat boost (default 5) |
Request:
GET https://knwdle.com/api/tools/marks-moderation-calculator?scores=32,41,28,55,60,37,44&targetMean=50&maxMarks=80&maxBoost=8
Response:
{
"tool": "marks-moderation-calculator",
"name": "Marks Moderation Calculator",
"source": "Illustrative flat-boost moderation: boost = min(maxBoost, max(0, targetMean − classMean)); moderated = min(maxMarks, raw + boost). Official board moderation tables differ — use only as an internal planning aid.",
"n": 7,
"boost": 7.57,
"originalMean": 42.43,
"moderatedMean": 50,
"originalScores": [
32,
41,
28,
55,
60,
37,
44
],
"moderatedScores": [
39.57,
48.57,
35.57,
62.57,
67.57,
44.57,
51.57
],
"steps": [
"Original mean = 42.43",
"Needed lift toward 50 = 7.57",
"Applied boost = min(8, needed) = 7.57",
"Moderated mean = 50 (scores capped at 80)"
]
}
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