Write your sub plan in 5 minutes, not 2 hours.
Drop in your schedule, your two helpers, and the one kid the sub needs to know about — get a complete, period-by-period plan a stranger can walk in and execute without texting you.
What it does
Sub plans shouldn't take two hours when you're already sick, stressed, or scrambling the night before a personal day. This skill takes what you actually know — your grade, your schedule, your two helpers, the one kid the sub absolutely needs a heads-up about — and turns it into a self-contained substitute teacher lesson plan a stranger can walk into your room and execute without calling the office. It was built from the failure modes that veterans have actually watched ruin sub days: the cold-start failure (sub arrives late, never reads past page 1), the single-helper failure (the one named helper is absent), the generic-pivot failure ('free reading' as a catch-all turns into chaos), the 'but Mrs. K lets us' failure (students claiming the teacher allows phones / candy / different seats), the stale seating chart failure, the front-door failure (parent appears mid-lesson), the silent handoff (sub leaves a note that just says 'rough day'). Every plan is defended against all twelve failure modes by default. They're non-negotiable. Three bundled references do the heavy lifting: a failure-modes guide that drives the structural defaults, grade-band defaults (K-2 attention signals, 6-8 phone policy, 9-12 settling time, dismissal rules) so the pacing and procedures fit your actual students when you don't specify, and a print-friendly HTML artifact spec (cold-start box, schedule table, lesson cards with green/orange pivot tints, traffic-light escalation ladder, fillable feedback form). If you only have grade + schedule + a rough lesson idea, the skill builds the full plan and flags every assumption inline. Works K-12, single day or multi-day, full-day or single-period coverage — and trims lesson detail but never safety sections when you need a shorter version.
Frequently asked
Install — no Terminal required
After checkout you land on a page with a one-click download and a pre-built install prompt. Pick the AI you already pay for — both packages are included, so you can't pick wrong.
No setup work before you buy — copy, paste, done.
Copy the pre-built install prompt from the success page, paste it into any Claude Code chat, and Claude installs the skill itself — about 10 seconds. Using the app instead? Drop the downloaded folder into a Claude Project's knowledge and ask Claude to use it.
- Click Download ChatGPT package (included with every purchase).
- Unzip it — inside is a SETUP.md and a knowledge/ folder.
- Go to chatgpt.com → your profile → My GPTs → Create a GPT → Configure.
- Paste the Name, Description, and Instructions from SETUP.md into the matching fields.
- Under Knowledge, upload every file in the knowledge/ folder.
- Click Create/Save, open your GPT, and describe your task in plain English.
A paid plan on either platform is required — Claude (Pro, Max, or Team) or ChatGPT (Plus or Team). Comfortable with Terminal? A one-line npx skilltree-network install path is available too.
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