Not every school has a budget for new EdTech subscriptions. The good news: some of the most useful AI tools for teachers are genuinely free — not just free for 14 days, but free for real classroom use indefinitely.
Here are 7 that are worth your time, with honest notes on what the free version actually gives you.
1. Canva for Education — Free for Every Verified K-12 Teacher
Apply for Free Canva for Education
The full Canva premium experience — free for verified K-12 educators. Create worksheets, presentations, posters and infographics with AI-assisted design.
Canva’s full premium plan — normally $120/year — is completely free for verified K-12 teachers and students. You need to verify with a school email, which takes a few days, but once verified, you get everything: AI design tools, premium templates, student collaboration, and integrations with Google Classroom and Teams.
For creating worksheets, presentations, posters, and visual aids, Canva with AI is hard to beat. It’s not a lesson planning tool, but for visual materials it’s the best free option available.
2. Brisk Teaching — Free Chrome Extension for Google Classroom
Install Brisk Teaching Free
A Chrome extension that brings AI feedback, content creation, and AI detection directly into your Google Classroom workflow. No new platform to learn.
Brisk Teaching’s free plan is one of the most useful free tiers in EdTech. The core features — AI feedback on student writing, content generation, AI detection — are all available for free, with usage limits that most teachers won’t hit in a typical week.
If you live in Google Classroom, install this first. It takes 90 seconds to set up and you’ll find a use for it within the first day.
3. MagicSchool AI Free Plan
Sign Up for MagicSchool AI Free
The most comprehensive AI platform purpose-built for teachers. Generate lesson plans, rubrics, differentiated content, IEP goals, and parent emails in seconds.
MagicSchool’s free plan limits the number of uses per month, but it’s generous enough to meaningfully test the platform. Use it for a month on just lesson planning and you’ll know quickly whether upgrading is worth it for your workflow.
Lesson generator, rubric builder, and parent email templates are all available on the free tier.
4. Khan Academy — Completely Free Math and Science Platform
Use Khan Academy Free
Khan Academy's free math practice platform now includes AI-powered hints and explanations through Khanmigo. Covers everything from basic arithmetic to AP Calculus.
Khan Academy’s entire platform — including the new Khanmigo AI tutor — is free for students via Khan Academy’s subsidized access. If your students need homework help and you want an AI tutor that teaches rather than just gives answers, recommending Khanmigo costs you nothing.
5. PhET Simulations — Free Interactive Science and Math Simulations
Use PhET Simulations Free
University of Colorado's free library of 150+ interactive STEM simulations. AI-enhanced teacher guides now suggest simulations based on your learning objectives.
150+ research-backed interactive simulations, completely free, works in any browser, no registration required. Every science and math teacher should be using PhET. There is no downside.
6. Quizizz Free Plan — Free Gamified Assessment
Try Quizizz Free
AI generates quizzes, games, and lesson content from any topic or document. Students compete in real-time with per-student analytics showing exactly who needs help.
Quizizz’s free plan allows unlimited quizzes and basic analytics. The AI question generation is included in the free tier — create a full review game from a topic description in about two minutes. The paid plan adds advanced analytics, but the free version is completely functional for most classroom use.
7. CommonLit — Free Reading Comprehension for ELA
Use CommonLit Free
A free platform with 2,000+ literary and informational texts paired with AI-guided reading questions, vocabulary, and comprehension assessments. Loved by ELA teachers.
2,000+ texts with AI-guided comprehension questions, completely free for teachers. If you teach any English or literacy course at grades 3–12, CommonLit should be in your regular toolkit.
The Free Stack: Start Here
If you want to start today with zero budget:
- Install Brisk Teaching (Chrome extension, 2 minutes)
- Verify and activate Canva for Education (takes a few days)
- Sign up for MagicSchool AI free and use it for one week of lesson planning
- Set up Khan Academy for student homework support
That’s a complete foundation that costs nothing.
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Affiliate disclosure: Some links in this article are affiliate links. However, all tools listed in this specific article are genuinely free — no purchase required.