Startup idea: Evidence Vault for Teacher Employment Disputes
A teacher receives a written reprimand with two false accusations alongside two true ones and doesn't know whether or how to contest it. Nothing was logged as it happened.
Get the PRD prompt, $9.99 Market: $106K in 3 years
r/Teachers · Sep 14, 2026 – Oct 14, 2026 · 34 upvotes
Can you refuse to accept a letter of reprimand if…
Read the thread · 84 comments
Evidence Vault for Teacher Employment Disputes is a startup idea for teachers and union members. A teacher receives a written reprimand with two false accusations alongside two true ones and doesn't know whether or how to contest it. Nothing was logged as it happened. A thread in r/Teachers drew 34 upvotes and 84 comments between Sep 14, 2026 – Oct 14, 2026. People get by with Personal notes and Union reps, and that still leaves this job open. Hotness is 3.70, Hot. Strong pain. Some willingness to pay. The thread drew 34 upvotes and 84 comments. Only clumsy or enterprise-only options. A 1-2 week mvp. A first version is weekend-easy, about 2 weeks, priced under $10 a month and charged as a subscription. The pain, the source, the alternatives, the scope notes, and the questions on this page are free to read and free to build from. The agent starter prompt is the paid part. The first slice is on the page. One credit unlocks the rest, to paste into a coding agent, download as Markdown, or send as a private link.
Who has it
Teachers and union members.
- Teachers
- Union members
- B2B
- United States
- r/Teachers
What people use now
2 options, and the gap between them.
Personal notes
Union reps
Only clumsy or enterprise-only options.
Evidence Vault for Teacher Employment Disputes is built for the part these leave undone.
A way through
A timestamped vault where teachers log incidents, admin correspondence and context through the year, plus templates for contesting reprimands tied to union contracts.
MVP scope
The first version, in 2 weeks.
- 00 Goal
The one job
Timestamped incident logging plus templates to formally contest a reprimand under union rules.
- 01 Week 1
The core
Give teachers a timestamped vault for incidents, admin correspondence, and context through the year.
- 02 Week 1
The follow-through
Include templates for contesting reprimands, tied to union contracts.
- 03 Week 2
How it ships
As a phone app, before any desktop or web version. AI helps, but the core job works without it.
- — Not in v1
Left out on purpose
Replacing personal notes. Version one does the one job above and stops there.
How it could charge
The business model, at a glance.
- Model
- Subscription
- Price
- Under $10 a month
- Buyer
- CompaniesA business with a budget pays
- Region
- United States
Hotness
Why it scores 3.70.
Strong pain. Some willingness to pay. The thread drew 34 upvotes and 84 comments. Only clumsy or enterprise-only options. A 1-2 week mvp.
34 upvotes 84 comments r/Teachers Sep 14, 2026 – Oct 14, 2026 verified Oct 14, 2026 Thread ↗
Weights: pain 25%, willingness to pay 20%, demand 20%, gap 15%, ease 10%, recency 10%. Recency is recomputed every build. The source report’s 1–10 score is not shown.
Market size · estimate
How big this could get
A bottom-up estimate for Evidence Vault for Teacher Employment Disputes: real customer counts × a realistic price. Not a forecast.
$36M a year
750,000 teachers · 20% of US public school teachers
$10.6M a year
220,000 teachers · reachable through teacher communities
$106K a year
2,200 teachers · 1% of the reachable segment in three years
What that means
2,200 teachers at $4/mo = $106K ARR
Low confidenceHow we estimated this
- Base: 3,760,000 US public school teachers.
- Has the problem: 20% (assume 1 in 5 want a private record of workplace issues).
- Revenue per teacher: $48 per year ($4/mo).
- Reachable: 30% (reachable through teacher communities).
- Three-year capture: 1% of the reachable segment.
TAM = customers with the problem × revenue per customer. SAM = the part an early product can reach. SOM = a conservative three-year share of SAM. Bars use a log scale. Shares marked “assume” are our judgment, not measured.
Source: NCES, Characteristics of Public School Teachers (2020–21)
Take it to a build
Build Evidence Vault for Teacher Employment Disputes with an agent, or with us.
Agent starter prompt
$9.99 / 1 credit
A full PRD written for a coding agent: scope, data model, screens, edge cases, and the first week of tasks for this idea.
- Copy it straight into Claude Code, Cursor, or Codex.
- Download it as a .md file you keep.
- Send your bot a private link that refreshes every seven days.
# Agent starter prompt: Evidence Vault for Teacher Employment Disputes You are a senior product engineer. Build only the product described in this document. If a detail is missing, choose the smallest option and write it down in the README. Do not invent a second product, a marketplace of marketplaces, or a growth hack. ## Product Name: Evidence Vault for Teacher Employment Disputes One line: Timestamped incident logging plus templates to formally contest a reprimand under union rules. Shape: Mobile app AI stance: AI-assisted Region for v1: United States Hotness (context only, not a requirement): 3.70 (hot). Strong pain; some willingness to pay; thread engagement 34▲/84💬 (demand 3/5); only clumsy or enterprise-only options; a 1-2 week mvp. ## Problem A teacher receives a written reprimand with two false accusations alongside two true ones and doesn't know whether or how to contest it. Nothing was logged as it happened. Who feels it: Teachers and union members.
The first slice is above. The rest unlocks for 1 credit and is never in this page’s HTML.
Credits work on both sites. On Business Ideas to Build the same credit unlocks the business plan and growth playbook for Evidence Vault for Teacher Employment Disputes.
Or we build it
Your first version, shipped by our team.
A working product in your repo, built from this PRD. You own the code.
$1,000 scoping fee, credited toward the build.
Equity instead of cash is an application, not a checkout →Questions
Is this idea already taken?
People already use Personal notes, Union reps. Those options do not do the job in the solution above. The idea is free to build. Nothing here is an exclusive claim.
How hard is a first version?
Weekend-easy. A tight MVP is about 2 weeks (2 weeks), assuming the regulated or partner-gated parts are stubbed. The paid prompt turns that into tasks.
Who would pay, and how?
The audience is teachers and union members. Charge a subscription, and test a price under $10 a month. Willingness to pay is one input to Hotness, not a promise that someone will buy.
Can I use the evidence?
Yes. Build the product. The thread title is a short excerpt with a link, not a quote we are putting in someone's mouth. Exact post dates and verbatim lines are added only after a manual check. Ideas are suggestions, not medical, legal, or financial advice.
If you want the operating plan rather than the build document, it lives on the sister site. Draft the business plan