AI tools for teachers: 11 tested and scored, from lesson plans to grading
Lesson planning, differentiation, quizzes, slides, feedback and AI detection: eleven reviewed AI tools for teachers, most free for an individual classroom, plus what to check before you use AI with students.
Teachers do not need another list of chatbots. They need the Sunday-night jobs done faster: the lesson plan, the three versions of one reading, the quiz, the slides, the feedback on thirty essays. This list is organized around those jobs. Every tool has been test-driven and scored out of 100 on the same rubric, and most are free for an individual teacher.
AI in a classroom also carries duties a list of tools usually skips, so the last section covers student privacy and district policy. For every education tool we have reviewed, ranked, see the best AI tools for education. If your students ask what they should be using, send them to AI tools for students.
Lesson planning and classroom materials
The blank page is the slowest part of planning.
MagicSchool: 83/100
MagicSchool is a library of more than 80 tools built for teachers: lesson plans, rubrics, quizzes, feedback, parent emails and more, each a short form rather than a prompt you have to engineer. It is free for individual teachers, and its SOC 2 certification and FERPA and COPPA alignment are why districts approve it. With that many tools, expect a little time finding the ones you will actually use.
Read the full MagicSchool review →
Help inside the documents you already use
The best tool is the one that does not need a new tab.
Brisk Teaching: 83/100
Brisk lives inside Google Docs, Slides and the Microsoft tools you already teach from. From a document you have open it can draft feedback on student writing, change a text's reading level, or build a quiz or a presentation. Its strong privacy rating helps with district approval. The free tier is limited, with batch feedback on paid plans, and its feedback is a first draft that still needs your judgment.
Read the full Brisk Teaching review →
One text, several reading levels
Differentiation is the job everyone agrees matters and nobody has time for.
Diffit: 78/100
Give Diffit any text or topic and it produces versions at different reading levels and in other languages, with vocabulary lists, comprehension questions and graphic organizers to match. It is simple enough to use between classes. It is built for text, so it helps less with math or lab work, and the free tier caps how much you can generate.
Whole-class writing with live feedback
Most classroom AI puts each student alone on a screen. This one does the opposite.
Curipod: 83/100
Curipod runs an interactive lesson where the whole class responds to a prompt, each student gets instant AI feedback on their writing, and you steer the discussion from the front. It aligns with more than 55 major ELA programs and needs no student accounts, which simplifies privacy. It needs you to facilitate every session, so it improves the lesson more than it shortens your prep.
Read the full Curipod review →
Quizzes from any material
Checks for understanding should not take longer to write than to grade.
Quizgecko: 81/100
Quizgecko turns a PDF, a slide deck or a YouTube video into a quiz with adjustable difficulty, along with flashcards and notes your students can study from. Questions occasionally need a quick edit for precision, so read them before you assign them. The free tier is limited.
Read the full Quizgecko review →
Slides, worksheets and classroom visuals
For everything that has to look good by first period.
Canva: 88/100
Canva makes worksheets, posters, slides and classroom displays easy for people who are not designers, with templates for almost every school need and AI tools for generating images and text. Its education plan is free for K-12 teachers. Advanced design control is limited, which rarely matters for classroom materials.
Gamma: 85/100
When you need a full deck from an outline, Gamma builds a clean one in minutes and lets you rearrange it by dragging cards. It is faster than Canva for a lecture-style presentation and weaker for worksheets. Free credits run out after a few decks.
Prep grounded in your own sources
When the answer has to come from your curriculum, not the internet.
NotebookLM: 88/100
Upload your unit's readings, standards and notes, and NotebookLM answers from those sources only, citing the passage. It will draft a study guide, a timeline or discussion questions from the set, and can turn it into an audio overview for students who learn by listening. It is free with a Google account.
Read the full NotebookLM review →
A general assistant
For the email to a parent, the reference letter, the idea you want to test.
ChatGPT: 93/100
ChatGPT handles the open-ended work the purpose-built tools do not: rewording a difficult email, brainstorming a project, explaining a concept five ways for five kinds of learner. It can be confidently wrong, so check facts before they reach students, and keep student names and records out of it. The free tier has usage caps at busy times.
Read the full ChatGPT review →
If your school runs on Google, Gemini (88/100) works inside Docs and Gmail; on Microsoft, Copilot (80/100) does the same in Word and Outlook.
Checking for AI writing
Useful as a signal. Dangerous as a verdict.
GPTZero: 78/100
GPTZero is the most widely used AI detector in education and plugs into Canvas, Google Classroom and Google Docs. Treat its score as a reason to have a conversation, never as proof: every detector produces false positives, and a wrong accusation does real harm to a student. Ask for drafts and version history before you act on a score. Schools needing institution-wide plagiarism and AI checks should look at Copyleaks (83/100).
Read the full GPTZero review →
Reaching multilingual families
A note home only works if it can be read.
DeepL: 89/100
DeepL produces more natural translations than the big general-purpose translators, which matters when the message is about a child. The free tier handles letters and short documents. For anything legal or sensitive, have a fluent speaker check it.
Before you use AI with students
Four checks that matter more than which tool you pick:
- Follow your district's approved list. Tools built for schools, such as MagicSchool, Brisk and Curipod, are designed around FERPA and COPPA. A general chatbot usually is not approved for student data.
- Keep student information out of general chatbots. No names, grades, IEP details or anything else that identifies a child.
- Review everything before it reaches a student. Generated questions, feedback and reading passages all contain occasional errors.
- Be open about it. Tell students and families where AI is used, and teach students what honest use looks like in your class.
Frequently asked questions
What is the best free AI tool for teachers? MagicSchool for planning and materials, because it is free for individual teachers and built for classroom rules. Add NotebookLM, also free, for anything that has to stay grounded in your own curriculum.
Can an AI detector prove a student used AI? No. Detectors estimate probability and are wrong often enough that a score alone is not evidence. Use it to start a conversation, and ask to see drafts and version history.
Is it safe to put student work into ChatGPT? Not with anything that identifies the student. Remove names and personal details, or use a tool your district has approved for student data.
