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EducationEasy1 to 2 weekendsUnder $100Web app

Rubric Builder

Turn an assignment description into a clear, printable grading rubric in minutes.

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The idea

Teachers paste an assignment and pick grade level and number of criteria. The app drafts a rubric table with performance levels and plain student friendly language that the teacher can edit. It saves planning time and makes grading more consistent.

Who it is for
Middle and high school teachers
How it makes money
Five free rubrics, then $5 a month
Suggested stack
Next.js, MySQL, Tailwind, hosted on a small VPS
Launch cost
Under $100

Your first AI prompts

Paste these into Claude, Cursor or Lovable, in order. Check that each one works before moving on.

PROMPT 1 OF 3

Build a web app called Rubric Builder. Teachers sign up and see a list of their rubrics. The new rubric form asks for assignment description, grade level, subject, number of criteria and number of performance levels.

PROMPT 2 OF 3

Send the inputs to an AI model that returns JSON with criteria names, point values and a description for each performance level. Render it as an editable grid where the teacher can change any cell, reorder rows and adjust points, with a live total.

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PROMPT 3 OF 3

Add export to PDF and a student facing version with simpler wording. Add a public library where teachers can share rubrics and copy others. Add Stripe billing for unlimited rubrics after five free.

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The 10 step playbook

  1. 01Claim your ideaPut your name on it and unlock every prompt and the full playbook. Always free.
  2. 02Domain and nameBrainstorm a short name, check the .com, and register it.
  3. 03Trademark basicsSearch for conflicts before you fall in love with the name.
  4. 04AI build kickoffPaste the prompts below into Claude, Cursor or Lovable, one at a time.
  5. 05Server and hostingPick a host and have your AI walk you through setup.
  6. 06Backend and dataLogins, database and payments, one prompt at a time.
  7. 07Frontend and designScreens, colors and a simple logo that look professional.
  8. 08Go livePut it online, then submit to the App Store and Google Play if it is a mobile app.
  9. 09Marketing planLaunch posts, local outreach and your first 100 users.
  10. 10Launch and growShip it and add your live link to earn the Shipped badge.
Your full playbook for Rubric BuilderEvery step spelled out for this idea, with the exact prompts to paste into your AI.
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