Free AI tools for teachers: the useful ones

The free AI tools worth setting up this October are MagicSchool for lesson planning, ChatGPT for Teachers or Google Gemini for general drafting, Canva for Education for visuals, and Diffit for leveled reading passages. SchoolAI's free plan is now a trial capped at five Space launches a year, so treat it as a sampler, not a classroom tool.

Every free-plan detail below was checked against the vendor's own page on October 15, 2026. Where a page gave no number, this article says so.

Which free AI tools can a teacher use right now, and what do they cap?

Tool	The job it does	Price and free-plan limit (checked October 15, 2026)	Data handling, per the vendor	Best for
MagicSchool	Lesson plans, rubrics, quizzes, class writing feedback	$0 "Forever Free." No numeric cap published; "unlimited generations" is Plus ($12.99 a month)	Privacy policy says student data is not used to train AI models	Weekly planning
ChatGPT for Teachers	General drafting, file uploads, custom GPTs	Free for verified U.S. K-12 educators; end date given as June 2028 in the page body, June 2027 in its meta description	OpenAI says content is not used for training by default	One general assistant
Google Gemini	Drafting, summarizing, lesson ideas	Included free in Google Workspace for Education editions; your admin has to switch it on	Google says data is not human-reviewed or used to train models	Schools already on Google
Canva for Education	Slides, posters, visual aids	"100% free" for K-12 teachers and students after verification	Canva says it never uses student data to train AI models	Turning a lesson into visuals
Diffit	One text into leveled passages, vocabulary, questions	Basic is free; content from the last 90 days only; PDF, print and share, no Google, Canva or Microsoft export	Directory lists its FERPA, COPPA and GDPR fields as unknown	Mixed reading levels
SchoolAI	Student-facing AI Spaces with teacher visibility	"Free Trial": 5 Space launches a year; Sidekick tutor not included	Directory lists FERPA and COPPA as yes (a directory field, not an audit); privacy page did not load for us	Trying student-facing AI

Our view: a free plan is the norm in this market, so the cap matters more than the price. In our directory of 138 AI tools for educators, extracted October 15, 2026, 79 list a freemium plan and 13 more list free access, some only for verified educators. Another 31 are paid and 14 ask you to contact the vendor.

Which free AI tool should I set up first?

Answer four questions in order and stop at the first one that settles it.

1. Do students need to be inside the tool? If yes, start with SchoolAI's trial or ask whether your school has switched on Gemini. MagicSchool's student tools (50+) sit on the paid Plus plan, and ChatGPT for Teachers is a teacher workspace.
2. Does your school run Google Workspace for Education? If yes, ask your administrator about Gemini before opening a personal account elsewhere. It costs your school nothing extra, according to Google.
3. What is the output? A lesson plan or rubric points to MagicSchool or ChatGPT. Slides and diagrams point to Canva. A reading passage at three levels points to Diffit.
4. Will a student's name or record ever go in? If yes, stop. Use only a tool your district has signed an agreement for, whatever the free plan says.

What does a week of planning look like on free plans only?

This is a worked plan, not a record of a classroom test. A grade 6 science teacher is planning a four-day unit on the water cycle.

1. Monday, MagicSchool. Ask for a four-day lesson sequence aligned to your state standard, then rewrite the objectives in your own words. The free plan has no published cap, so note how many generations you ran before it slowed or stopped. That is the cap, and it is the only way to find out.
2. Tuesday, Diffit. Paste a short text about evaporation and condensation and generate it at three reading levels with vocabulary and comprehension questions. Download the PDFs the same day. Basic keeps only the last 90 days of content, and Google Docs export is a paid feature.
3. Wednesday, Canva for Education. Build a labeled water cycle diagram for the board and a one-page handout from the Diffit PDF text.
4. Thursday, your judgment. Read every output against the standard before it reaches a student. No student names or scores went into any of these tools, so no data agreement was needed.

Is MagicSchool's free plan enough for weekly planning?

MagicSchool is the best fit for weekly lesson plans, rubrics and quizzes because its free plan includes 80+ teacher tools and the Raina chatbot at $0, and it holds a 4.74 rating from 19 reviews in our directory.

Pricing: Free is $0 and described as "Forever Free." Plus is $8.33 per user per month billed annually or $12.99 billed monthly, and adds unlimited generations, unlimited output history, unlimited output editing and 50+ student tools (MagicSchool pricing, checked October 15, 2026). The page states no numeric cap for Free.

Watch out for: The cap is invisible until you hit it. The comparison table marks "unlimited generations" as unavailable on Free and gives no threshold, so a planning-heavy week may run into it.

Safety: MagicSchool's privacy policy says it does not "use Student Data to train, fine-tune, or improve artificial intelligence or machine learning models" and that student data is processed "under a student data privacy agreement" with the school. A 9ine security assessment is listed in our directory. Whether your school has that agreement is a question for whoever signs your district's contracts, not something a teacher account settles.

Choose something else if you want one assistant for every task rather than a set of teaching templates. Our lesson planning comparison sets MagicSchool beside the alternatives.

Is ChatGPT free for teachers?

ChatGPT for Teachers is the best fit for a teacher who wants one general assistant for drafting, file uploads and custom GPTs, because OpenAI's page lists unlimited messages, file uploads, image generation and Canva, Google Drive and Microsoft 365 connections at no charge for verified U.S. K-12 educators. It holds a 4.35 rating from 23 reviews in our directory.

Pricing: Free for verified U.S. K-12 educators, with verification handled by SheerID. OpenAI's page says the offer runs "through June 2028" in its body text, while the page's meta description says June 2027. We could not tell which is current, so plan for the earlier date. After the free period, OpenAI says it may adjust pricing and will give advance notice (OpenAI, checked October 15, 2026).

Watch out for: It is limited to U.S. K-12 staff, and verification is a separate step. Teachers outside the U.S. are not covered by this page.

Safety: This is OpenAI's claim: "Anything you share with ChatGPT for Teachers is not used to train our models by default," and the workspace "is built to protect student data and help schools meet FERPA requirements." Whether your district allows student information in it is the district's decision. Our ChatGPT for Teachers versus Claude for Teachers comparison covers the district-level choice.

Choose something else if you are outside the U.S., or if your school already runs Google Workspace and has Gemini on.

Is Google Gemini free for teachers?

Google Gemini is the best fit for teachers in schools that already use Google Workspace for Education, because Google says Gemini for Education is "included in all Google Workspace for Education editions free of charge." It holds a 4.59 rating from 41 reviews in our directory.

Pricing: No charge to the teacher, but the school's administrator controls whether it is on (Google, checked October 15, 2026). We did not check any standalone teacher plan outside Workspace for Education.

Watch out for: Availability depends on your administrator. Google says students under 18 get "a distinct product experience with extra guardrails and AI literacy resources," so a student's version differs from yours.

Safety: Google states "Your data is not human-reviewed or used to train AI models." That is Google's statement about the education product. A 9ine security assessment is listed in our directory, and your district still decides what may go in.

Choose something else if your school is not on Google, or if you want ready-made teaching templates.

Is Canva for Education free for teachers?

Canva for Education is the best fit for turning a lesson into slides, posters and handouts, because Canva says "Canva Education is 100% free for K–12 teachers and students," and it holds a 4.62 rating from 39 reviews in our directory.

Pricing: Free after you sign up "with your education email or upload proof of employment"; Canva says it verifies "within a few days" (Canva, checked October 15, 2026).

Watch out for: The page says "most of Canva's premium features" are included but does not list them, and it does not name Magic Write. Whether a particular AI feature is on the free education plan is unverified here.

Safety: Canva says it "never uses student data to train AI models." That is Canva's claim, and student work uploaded to a design tool is still student data.

Choose something else if the job is a lesson plan or a reading passage rather than a visual.

Does Diffit's free plan do enough for mixed reading levels?

Diffit is the best fit for turning one text into leveled reading passages, vocabulary and comprehension questions, because its free Basic plan keeps those core tools at no cost. It holds a 4.20 rating from 5 reviews in our directory.

Pricing: Basic is free. Only content created in the last 90 days is accessible, and you can download PDFs, print and share, but exports to Google, Canva and Microsoft formats are not included. Unlimited resources, longer inputs and chapter books, standards and DOK alignment are on paid plans (Diffit pricing and plans, checked October 15, 2026). Individual teacher licenses exist, but neither page showed a price: no public pricing found.

Watch out for: The 90-day window deletes your access to older resources. Save the PDFs.

Safety: The directory lists Diffit's FERPA, COPPA and GDPR fields as unknown. Read its privacy page, which links to the full policy, and ask your data lead before using student texts or names.

Choose something else if you need Google Docs export without paying, or an assistant that does more than reading passages.

Is SchoolAI still free for teachers?

SchoolAI is the best fit for trying student-facing AI with teacher visibility, because free accounts still include student chat review and SchoolAI says its Critical Alerts "remain active for every user, on every plan." It holds a 4.92 rating from 13 reviews in our directory.

Pricing: The free plan is now a "Free Trial" with "5 Space launches per year," and the Sidekick student tutor is "Not included" (SchoolAI pricing, checked October 15, 2026). A SchoolAI post dated July 15, 2026 says "Free trial accounts now include five Space sessions per year" (SchoolAI). Pro and Scale list no public price, and the same post says paid plans are available only through school or district purchase.

Watch out for: Older descriptions, including earlier versions of this article, said the free tier includes custom AI tutors. The pricing page now says otherwise, and a directory rating does not tell you about the cap. Five sessions is a handful of lessons, not a term.

Safety: The directory lists FERPA and COPPA as yes, a directory field rather than an audit, and United States data hosting. SchoolAI's privacy page did not load when we checked, so its terms on model training and student age are unverified. Treat that as something to read before any student joins a Space.

Choose something else if you need students working with AI all year without a school contract.

What about Conker, Gibbly and Khanmigo?

We keep these three out of the main comparison because we could not verify their free plans. Conker and Gibbly are quiz and activity generators listed as freemium in our directory; neither has a user review there, and their pricing pages did not load on October 15, 2026, so their free-plan limits and the format and LMS-export claims this page made earlier are unverified. Khanmigo was announced free for U.S. educators on May 21, 2024, with Microsoft covering the cost and no end date stated (Khan Academy); we did not recheck its current status, so confirm it before relying on it.

What should I check before putting student information into a free AI tool?

Four checks settle most cases, and the first is the one a teacher cannot do alone.

1. Who signs the agreement? A student data privacy agreement is between the school or district and the vendor. Ask your administrator whether one exists for the tool.
2. Is student data used to train models? Read the privacy policy for the exact sentence, as with MagicSchool's above, rather than a badge.
3. What is the age minimum? Check the terms. Google, for one, runs a separate under-18 experience.
4. Is there a student-facing mode? A teacher-only tool needs a different review than one students log in to.

Our FERPA and student account guide works through the district side, our safe AI tools for schools guide covers the wider checks, and the directory's security assessments page shows which tools carry an independent 9ine review. If budget is the constraint, AI tools for Title I schools covers what Title I funds can buy. For the task-by-task picks, browse the lesson planning and resource creation category.

What changed in this update?

Change log, October 15, 2026: rebuilt around a comparison table with each free plan's limit and date; added ChatGPT for Teachers, Google Gemini and Canva for Education; corrected SchoolAI's free plan, which is now a five-launch trial; replaced "126 tools" with the directory's current 138; moved Conker, Gibbly and Khanmigo to a short unverified note; removed first-person claims we cannot evidence.