A grading rubric builder that turns an assignment prompt into a scoring guide. It can organize criteria and performance levels using approaches such as Bloom's taxonomy, Depth of Knowledge, or SOLO.

Use it to create analytic or holistic rubrics for essays, projects, lab reports, and group work, or to decide what to look for when grading.

It replaces incomplete or vague grading sheets with specific descriptions for every score level, making expectations and grading decisions clearer.

rubric — Skill for Claude Code by Jellypod-Inc

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add Jellypod-Inc/school-skills --skill rubric

Clone the repo

git clone --depth 1 https://github.com/Jellypod-Inc/school-skills

Made for: Claude Code.

Or install school-skills, the plugin that ships this one along with the rest of its 7 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/jellypod-inc/school-skills/rubric/github.svg)](https://agentmods.dev/skills/jellypod-inc/school-skills/rubric)

Your own site

<a href="https://agentmods.dev/skills/jellypod-inc/school-skills/rubric"><img src="https://agentmods.dev/badge/skills/jellypod-inc/school-skills/rubric/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/jellypod-inc/school-skills/rubric"><img src="https://agentmods.dev/badge/skills/jellypod-inc/school-skills/rubric.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 185 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,580 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00185	$0.03580
Opus 5	$0.00093	$0.01790
Sonnet 5	$0.00037	$0.00716
Haiku 4.5	$0.00018	$0.00358

Measured 11d ago against content hash 3bf1ea9e02f5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

rubric scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/rubric/SKILL.md · 197 lines

How it starts

The opening of the file, as written. The whole thing — 197 lines — stays where its author put it; the contents beside it link to each section on GitHub.

rubric

Build defensible, fully-populated grading rubrics from an assignment prompt. Holistic or analytic, 3-6 criteria x 3-5 levels, aligned to Bloom's (default), DOK, SOLO, or standards. Every cell is written — no "TBD", no "same as above", no cells that are just "less of the previous level."

When to trigger

Fire on any phrase combining "rubric / scoring guide / grading guide / criteria" with an assignment, or on any of these cues. Teachers rarely say "rubric" — cover the synonyms.

"I need a rubric for [assignment]."
"Make me a rubric for this essay."
"Grade this essay assignment" / "help me grade…"
"Build a scoring guide for [project]."
"Write an analytic rubric for a lab report."
"Holistic rubric for a 6th-grade narrative."
"4-point mastery rubric for…"
"Rubric aligned to DOK" / "aligned to Bloom's" / "aligned to CCSS."
"Scoring criteria for a group project."
"How should I grade this?"
"Turn this assignment prompt into a rubric."
"Make a student-facing rubric I can hand out."
"What should I look for when grading [X]?"

Inputs

Required:

Assignment prompt — pasted text, uploaded PDF/DOCX, photo of a handout, or URL to a class page.

Optional (ask only if ambiguous after inference; otherwise use defaults from § Grade-band defaults):

grade — K-2 | 3-5 | 6-8 | 9-12 | college | grad
subject — ELA | math | science | social studies | CS | art | PE | world language | other
rubric_type — holistic | analytic
criteria_count — 3-6 (default 4)
levels_count — 3-5 (default 4)
alignment — bloom (default) | dok | solo | ccss | ngss | state:<code> | ib | none
scoring_style — points | qualitative | hybrid
total_points — integer (default 100 when scoring_style=points)
audience — teacher (default) | student | both
outputs — any subset of {markdown, csv, classroom_csv, student_handout}

Inferring grade / assignment-type from phrasing (before asking)

Read the full file on GitHub · 197 lines

Files

What ships with it

14 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

11d ago First seen · 197 lines · 185 tokens per session scan A 3bf1ea9e02f5

Subscribe to this mod's changes

rubric is a skill published in the GitHub repository Jellypod-Inc/school-skills (6 stars, last pushed 4mo ago), licensed MIT. It adds 185 tokens to every session and 3,580 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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rubric

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Nothing flagged

How it starts

rubric

When to trigger

Inputs

Inferring grade / assignment-type from phrasing (before asking)

What ships with it

What this file has done since we first saw it

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understand-explain

baoyu-comic

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