Affordable AI essay grading for teachers paying out of pocket.
Start free. Continue for $5/month when Grade Harbor saves you time.
No credit card required | Teacher approval required | Plans start at $5/month
Free Trial
Try every Teacher Plus feature free for 30 days — no credit card required.
- Full Teacher Plus feature access
- Up to 60 essays
- 30-day limit(30 days)
- Student skill profiles
- Writing-growth system
- 1 teacher
- Email support
Teacher
For individual teachers who want affordable essay grading help.
- 300 essays/month
- 1 teacher seat
- Rubric-based AI score suggestions
- Written justifications per criterion
- Teacher override and grade locking
- Student skill profiles
- Email support
Teacher Plus
For teachers grading higher volume or using writing-growth insights.
- 750 essays/month
- Everything in Teacher
- Full writing-growth dashboard
- Instructional priority view
- Class-level skill patterns
- Priority email support
School/District
For departments, schools, and districts with multiple teachers.
- Unlimited essays
- Multiple teacher seats
- Everything in Teacher Plus
- School admin view
- SSO / SAML(Coming)
- LMS integrations (Phase 2)(Coming)
- Invoice & PO payment
- Dedicated onboarding
- Data Processing Agreement
Compare plans
| Feature | Free Trial | Teacher | Teacher Plus | School/District |
|---|---|---|---|---|
| Grading | ||||
| AI grading per criterion | ||||
| Written justifications | ||||
| Teacher score override | ||||
| Grade locking | ||||
| Essay volume | 60 trial | 300/mo | 750/mo | Unlimited |
| Insights & Writing Growth | ||||
| Student skill profiles | ||||
| Full writing-growth system | — | |||
| Instructional priorities dashboard | — | |||
| Administration | ||||
| School admin view | — | — | — | |
| Multiple teacher seats | — | — | — | |
| SSO / SAML | — | — | — | Coming |
| LMS integrations | — | — | — | Coming |
| Support & Compliance | ||||
| Email support | ||||
| Priority support | — | — | ||
| Data Processing Agreement | — | — | — | |
| Dedicated onboarding | — | — | — | |
| Invoice & PO payment | — | — | — | |
Frequently asked questions
Do I need a credit card to start the trial?
No. The 30-day free trial requires no credit card. You can grade up to 60 essays with full Teacher Plus feature access. If you want to continue after the trial, you choose a plan then.
What happens when my trial ends?
Your essays, rubrics, and grades are preserved — nothing is deleted. Grading new essays and uploading files are paused until you subscribe. You can resume at any time.
Can I switch plans later?
Yes. You can upgrade or downgrade at any time. Upgrades take effect immediately; downgrades take effect at the end of your current billing period.
Does my school need to pay, or can I pay personally?
Either. The Teacher and Teacher Plus tiers are fully self-serve and can be paid personally by card. The School/District tier can be invoiced to your school's accounts payable — no personal card required.
Is student data safe?
Yes. Grade Harbor is FERPA-compliant. Student essay content and grades are education records that are never used to train AI models and never shared with third parties without a signed Data Processing Agreement.
Does the AI replace my grading judgment?
No — and this is by design. The AI prepares a draft grade for each criterion; you review, override, and approve every grade before it is recorded. No grade is ever recorded without your explicit approval.
What integrations are available?
Grade Harbor currently supports manual upload for PDF, DOCX, and TXT files so teachers can start without district setup. Google Classroom and Canvas integrations are planned for a future school/district release.
How is this different from other AI grading tools?
Grade Harbor is focused on rubric-based writing feedback for teachers who want a simple, affordable workflow. It is not a general AI toolbox and it does not make final grading decisions for you.
Why is Grade Harbor less expensive?
We are starting with a focused teacher workflow: rubric-based essay grading, review, override, and export. We are not asking individual teachers to pay district-platform prices.
What if I need a Data Processing Agreement?
A DPA is available on the School/District tier. Reach out via the inquiry form below and we will send you a signed DPA within 48 hours.
School or district inquiry
Need a purchase order, IT review, custom onboarding, or a Data Processing Agreement? Fill in the form below and we'll get back to you within one business day.
- FERPA compliant
- No student data used for AI training
- Human-in-the-loop — teacher reviews every grade
- Cancel anytime
- Runs in your browser — no software to install