Free AI for Teachers in 2026: Lesson Planning, Grading and Slides

Teachers get more free AI than almost anyone: OpenAI and Anthropic each give U.S. K-12 educators a paid-level chatbot for free, Google and Microsoft include AI in their free school plans, and Canva and Adobe give K-12 teachers their premium design tools with AI. Outside those programs, the everyday free tiers of ChatGPT, Mistral and Bing Image Creator cover lesson planning and slides, with lower limits and one important catch for grading: what you paste in may be used for training.

The teacher programs below are not in our catalog yet, so their rows link to the vendor's page; the everyday free tiers link to our verified offer pages. Every program was checked on the vendor's own page on 2026-10-24 or 2026-10-26.

Free plans built for teachers and schools

Higher-education teachers are left out of most of this: ChatGPT for Teachers, Claude for Teachers, Canva Education and Adobe Express for K-12 are K-12 only. Google Workspace for Education and Microsoft 365 A1 cover universities too.

Everyday free tiers (no school needed)

Which chat apps train on what you type, and how to turn it off: does it learn from my chats?

Lesson planning

1. Give the model the frame: grade, subject, the standard or learning goal, lesson length and what your students already know. "Plan a 45-minute lesson for grade 7 on ratios; most students can do fractions but not percentages" works much better than "a lesson on ratios".
2. Ask for one piece at a time: the plan, then a warm-up, then an exit ticket, then the same worksheet at two reading levels.
3. Check every fact, date and quote before it reaches students. Chatbots invent plausible sources and numbers: see why it invents sources.
4. Claude for Teachers and ChatGPT for Teachers can read your curriculum files and, with connectors, your Drive; on a free tier, paste only the parts you need.

Grading and feedback

• Keep student names and personal details out of free consumer chatbots. ChatGPT Free and Mistral's free plan train on chats by default. The teacher plans (ChatGPT for Teachers, Claude for Teachers) and your school's Google or Microsoft account are the places for student work, and only if your school allows it.
• Let it draft feedback, not decide the grade. Give it your rubric and one anonymous piece of work, ask for comments against each criterion, and edit them. You give the grade.
• It tends to agree with you. If you ask "this essay is weak, isn't it?", expect it to find weaknesses. Ask neutral questions: why it agrees with everything.
• Don't grade on an AI detector score. Detectors measure how predictable the writing is, which flags some human writing and misses edited AI text: can an AI detector tell?

Slides

• Canva Education and Adobe Express for K-12 turn an outline into a designed deck with their AI tools, and both are free for K-12 teachers. Adobe's 250 generative credits a month are shared by images and other AI features.
• Google Slides and PowerPoint for the web come with Google Workspace for Education and Microsoft 365 A1; ask a chatbot for the outline and speaker notes, then paste them in.
• Pictures: Bing Image Creator's 15 fast creations a day are enough for a deck; ChatGPT Free's image generation is limited too.

Steps

ChatGPT for Teachers (U.S. K-12)

1. Open the ChatGPT for Teachers page and choose Get verified.
2. Verify through SheerID as a K-12 educator, then set up your workspace and invite colleagues.

Claude for Teachers (U.S. K-12)

1. Sign in to Claude and start the Claude for Teachers verification with your school email.
2. Accept the K-12 terms. Sign up by June 30, 2027 to get the full free year.

Canva Education (K-12, any country)

1. Open Canva Education and choose Get verified.
2. Sign up with your school email or upload proof of employment; Canva checks it within a few days. Then invite your class.

Microsoft 365 A1 and Google Workspace for Education

1. Microsoft: enter your school email on the Microsoft 365 Education page; if your school is eligible, A1 starts at no cost.
2. Google: ask your school or district admin; only the institution can sign up for Education Fundamentals.

Limits and the catch

• Most teacher plans are U.S. only. ChatGPT for Teachers and Claude for Teachers require a U.S. K-12 school; Canva Education is the one teacher plan open in every country.
• Free periods end. ChatGPT for Teachers is free through June 2028, Claude for Teachers for a year from sign-up. Note the date before your materials depend on it.
• Student data rules come from your school. Even on a teacher plan, whether you may share identifiable student information is your school's or district's decision.
• Free tiers change. We re-check offers monthly; student AI deals lists the free AI deals for students.