Trellis
Trellis is browser-based software that turns K–12 classroom walkthrough notes into teacher feedback and coaching conversations.
What Trellis is
Trellis is browser-based software that turns K–12 classroom walkthrough notes into teacher feedback and coaching conversations. Observers can type or dictate notes, attach evidence, create framework-aligned drafts, edit them, and deliver feedback through teacher portals. Supported frameworks include Danielson, Marzano, CSTPs, UDL, state rubrics, and local forms. Administrators review each AI draft and decide what to send; Trellis says it does not automatically rate teachers or send data to HR systems. Elli answers questions from a school’s observations and feedback, with district-wide queries for District plan leaders. The Site plan costs $249 a year and includes unlimited teachers, observations, feedback, and Elli; a 14-day trial is available, but there is no free plan. Trellis has no live SIS or LMS synchronization, though staff can be invited by email and data exported or imported as CSV. Workspace exports also support JSON. It has no mobile app or on-premise installation.
Good
- Typed or dictated observation notes
- Evidence attachments and feedback drafts
- Supports multiple instructional frameworks
- Elli answers observation questions
- CSV and JSON data exports
Watch out
- No free plan
- No live SIS or LMS sync
- No mobile app
- No on-premise installation
Who it suits
Trellis is for principals, assistant principals, instructional coaches, district leaders, and teachers managing observation-based feedback. It suits schools wanting reviewed AI drafts and framework-aligned coaching records in a browser.
Verdict
Trellis organizes walkthrough evidence, reviewed feedback, and coaching questions for K–12 teams. Its browser-only workflow and lack of live SIS/LMS connections may matter when fitting it into existing school systems.
Plans and prices
From Trellis's own pricing page, checked 7 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Site plan | $249 a year | Unlimited teachers · Unlimited observations & feedback · Elli included · Share data with site admins · Basic chat and email support · $249 a year |
| District plan | Priced on request | Everything in Site plan · District analytics · Unlimited teacher portals · Elli across the district · Personalized priority service · Custom pricing based on size and needs |
The facts
Each one read from Trellis's own pages, with the date it was checked.
What it does
- AI assistant
- Elli answers questions using a school's observations and feedback, and District plan leaders can query across their schools.checked 7 Oct 2026
- AI providers
- Trellis uses Anthropic and OpenAI commercial APIs, and says customer data is not used to train their models.checked 7 Oct 2026
- AI review
- AI drafts feedback, but an administrator reviews and chooses what to deliver; Trellis says it does not automatically rate teachers or send data to HR systems.checked 7 Oct 2026
- Compliance
- Trellis is designed to support FERPA obligations and offers data processing agreements; it says its infrastructure vendors hold certifications, while Trellis itself has not completed a SOC 2 audit.checked 7 Oct 2026
- Data controls
- Admins can export workspace data as CSV or JSON, and Trellis says it does not sell data or use it for advertising.checked 7 Oct 2026
- Frameworks
- Trellis supports frameworks including Danielson, Marzano, CSTPs, UDL, state rubrics, and local walkthrough forms.checked 7 Oct 2026
- Hosting
- Trellis is browser-based and hosted on Vercel with a PostgreSQL database managed on AWS via Supabase; it has no on-premise install.checked 7 Oct 2026
- Integrations
- Trellis has no live SIS or LMS sync today; staff can be invited by email and data can be moved in or out as CSV.checked 7 Oct 2026
- Intended users
- Trellis serves principals, assistant principals, instructional coaches, district leaders, and teachers.checked 7 Oct 2026
- Observation workflow
- Observers can type or dictate notes, attach artifacts, generate framework-aligned drafts, review and edit them, and deliver feedback through teacher portals.checked 7 Oct 2026
- Purpose
- Trellis helps K–12 school leaders turn classroom walkthrough notes into personalized teacher feedback and coaching conversations.checked 7 Oct 2026
- Security
- Trellis says data is encrypted in transit with TLS and at rest with AES-256, and access is scoped to each school's workspace.checked 7 Oct 2026
- Support
- Trellis says it will provide a written response to questions within one business day.checked 7 Oct 2026
- Voice notes
- Voice notes are transcribed and the audio recording is deleted immediately; Trellis keeps the text transcript.checked 7 Oct 2026
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