Best AI grading tools for teachers
Grading is the work most teachers want to offload first; the average teacher spends 5-7 hours a week on it outside contracted time. The four below help with caveats about ethics and accuracy. Use AI for first-pass feedback on long-form work and rubric scoring; never use it for final letter grades without teacher review.
MagicSchool
★ Editor's pickFree tierAI platform built specifically for teachers: lesson plans, rubrics, IEP drafts, parent comms.
Free plan for teachers. Plus at $8.33/month billed yearly ($12.99 monthly). School and district pricing separate.
Rubric generator, feedback writer, and writing grader bundled in the broader platform. Best generalist grading helper.
Pros- 70+ teacher-specific tools (lesson plans, exit tickets, IEP language, accommodation generators)
- Built with teacher feedback, not retrofit for education
- Free tier is useful and not crippled like most freemium models
Cons- Some tools are thin wrappers around ChatGPT for tasks ChatGPT does as well
- Plus tier's main benefit is unlimited use, not new features
- Spotty support for non-English curricula
Eduaide
Free tierMagicSchool's closest competitor: AI lesson planning, assessment generation, and teacher resources.
Free plan with no card required. Paid plan at $49.99/year, about $4.17/month. Regional pricing may vary.
Feedback Bot grades student work against rubrics. Strong specifically for formative assessment feedback.
Pros- Resource generator covers worksheets, slide decks, and assessments in one tool
- Feedback Bot grades student work against rubrics, useful for formative assessment
- Cheaper than MagicSchool Plus on annual billing
Cons- Smaller tool catalog than MagicSchool
- UX feels less polished, more utility-focused
- Slower to ship new features than MagicSchool's funded pace
Brisk Teaching
Free tierChrome extension that adds AI features directly into Google Docs, Slides, and Classroom.
Free plan. New sign-ups get 14 days of Premium. Premium for schools and districts is custom-priced.
Inline grading inside Google Docs where most student writing already lives. Less friction than copy-pasting into a separate tool.
Pros- Lives in Google Workspace where most K-12 teachers already work
- Feedback, rubric generation, and AI-detection tools surface in the document, no app switching
- Free tier covers core features for individual teachers
Cons- Tied to Google Workspace; less useful for Microsoft schools
- Tool catalog narrower than MagicSchool
- AI-detection feature should be used carefully, not as a verdict
ChatGPT
Free tierOpenAI's flagship. The chatbot most people already pay for, with the deepest ecosystem.
Free plan. Go at $8/month, Plus at $20/month, Pro from $100/month with $200 and $500 tiers. Business at $25/user/month billed yearly.
Generalist with a Custom GPT trained on your rubric. Cheaper than dedicated tools but requires more setup.
Pros- Custom GPTs lock a style guide so a team doesn't re-paste it every time
- Memory carries context across sessions without a workflow
- Image generation, voice, and web browsing are bundled in
Cons- Long outputs drift off-voice unless you keep correcting
- Memory occasionally pulls in irrelevant past chats
- Pro tier is overkill for most marketing writing
Frequently asked questions
Is AI grading reliable for summative assessment?
For draft feedback you'll review, yes. For final summative grades, less so; biases creep in. The defensible workflow: AI generates feedback, teacher reviews and finalizes.
What about AI detection tools?
Don't trust them as the verdict. Use them as one signal alongside writing process evidence, in-class samples, and student conversations. Wrongful accusations are common.
Can students see AI-generated feedback?
Yes, transparently. Many teachers tell students upfront: 'I use AI for first-pass feedback, then I review.' Reduces resentment and models the work.
How do I save time without lowering quality?
Use AI for the part you'd skip otherwise: detailed line edits, sentence-level comments. Spend your saved time on what only you can do: judging the argument.
