Grading takes teachers more time than they have. Between lesson plans, teaching classes, parent emails, and even hallway duty, teachers already have their hands full. Pile on stacks of essays and assignments on top of that, and suddenly evenings vanish and weekends get swallowed up by grading and red ink.
While teachers are just beginning to explore AI in their work, students are already embracing it at a staggering pace. Reports suggest that more than 8 in 10 students globally use AI regularly for homework, essays, and studying. That shift makes grading tougher than ever.
Teachers don’t just need tools that save them time, they need tools that also keep grading fair and protect academic integrity. The AI in the education sector was valued at $5.9 billion in 2024 and is projected to grow to $32.3 billion by 2030. This isn’t a passing trend, it’s truly the future of assessment.
Which is why choosing the best AI essay grader really matters for the overworked teachers. The right one can give teachers back hours in their week, keep feedback consistent, and support real learning outcomes. The wrong one? It creates more clicks, more friction, and more headaches.
That’s why we’ve created this guide to help you understand the top 7 AI Essay Graders and which one gets our vote.
1. EssayGrader
Rating: ?4.8/5
Pricing: Free up to 25 essays every month for teachers. Paid plans available for both individual teachers and Districts.
Best for: Hands down the best option for grading essays. EssayGrader (aka essaygrader.ai) is the most advanced and reliable AI tool for grading essays and written assignments. It consistently earns top ratings from teachers who praise its speed, accuracy, and fairness.
Pros:
- As the name suggests, the platform is purpose-built for grading essays with AI. Saves teachers 5 – 6 hours per week by grading entire classes with U.S state standards and curriculum-aligned rubrics.
- Consistently top-rated by teachers (? 4.8/5), with teachers raving about its user friendliness and essay grading accuracy. EssayGrader (essaygrader.ai) has some of the best reviews of any AI edtech tool we have seen in the AI essay grading category.
Cons:
- Limited training videos/resources for self learning given the platform’s power and functionality.
- Doesn’t yet support grading beyond essays (e.g., math or video submissions).
What Teachers like:
- Teachers love that they can easily create custom rubrics from a template, upload them and grade an entire class of 40-50 students in less than an hour – saving as much as 5-7 hours every week.
- Teachers mention that essays are graded for the entire class uniformly without human bias, and from a data perspective, the calibrated scores provide confidence that results are fair and accurate across the board.
- EssayGrader (essaygrader.ai)’s generous free plan lets teachers grade up to 400 essays per school year, making it one of the most accessible AI graders available.
- Lastly, teachers appreciate the writing insights dashboard at class level, assignment level and student level to help them easily spot areas of growth and adjust their instruction level for students.
What Teachers don’t like:
- Some teachers mention that EssayGrader (essaygrader.ai) offers limited training resources and tutorials available for self-paced learning, making it harder to master all of its advanced features.
- A few also note occasional inaccuracies when grading citation formats such as MLA or APA, especially in essays that rely on research references.
2. Magic School AI
Rating: 4.3/5
Pricing: Free for individual teachers / Paid plans for Districts come with added privacy and safety guardrails.
Best for: Teachers who want a free all-in-one AI tool for lesson planning, slide creation, and general writing feedback rather than deep essay analysis or rubric-based grading.
Pros:
- Magic School is widely adopted across School Districts and is praised for its ease of use. It’s excellent for lesson plans, IEPs, Sub plans, and general classroom prep.
Cons:
- Not purpose-built for AI essay grading, so grading workflows often feel clunky for teachers.
- The platform also doesn’t assign scores for essays based on rubric criteria. Instead, it simply highlights the “Strengths’ and “Weaknesses” of writing, which often isn’t enough for teachers trying to quicken their grading workflow.
What Teachers like:
- Many teachers say MagicSchool is a lifesaver for lesson planning.
- Teachers appreciate its wide range of classroom preparation tools, straightforward content creation, and its adaptability for building lessons or test materials for diverse learners.
What Teachers don’t like:
- Teachers feel that grading in MagicSchool AI feels like an afterthought compared to dedicated AI grading tools.
- They also feel that the LMS integrations could be smoother, especially considering the platform’s scale and adoption.
3. Brisk
Rating: 4 /5
Pricing: Free for individual teachers. Paid plans are available for Districts.
Best for: Teachers who want an all-in-one AI assistant inside their LMS to generate lesson plans, quizzes, and classroom materials – rather than a dedicated AI essay grading tool.
Pros:
- One of the standout features of Brisk is that it lives directly inside the most popular LMS tools teachers are already using – like Google Classroom, Canvas and Microsoft Teams. Teachers don’t have to login to a new platform or learn the platform. Simply tap the Brisk icon and access its full suite of AI tools.
- Need a quiz, a slide deck, a rubric, or a lesson plan? Brisk can generate them in seconds. Want to give feedback, check a student’s writing, or adjust the reading level of the text? That can be done too without jumping back and forth between tools or doing it manually from scratch.
Cons:
- Brisk requires the Google Chrome browser to function, limiting its use in Districts that use different browsers or restrict browser extensions.
- Given that it’s primary purpose is not AI grading, Brisk doesn’t support batch grading an entire class’s essays at once. Teachers must grade one essay at a time. making it hard for teachers to get the time savings and efficiency they get compared to dedicated AI essay graders.
What Teachers like:
- Teachers love Brisk for creating high-quality lesson plans, PowerPoints from YouTube videos and building Quizzes in seconds.
- They also appreciate Brisk Boost, which allows students with reading difficulties to engage with the same material as their peers, but at a more accessible level for them.
What Teachers don’t like:
- Brisk doesn’t give rubric-based scores for assignments and essays on the free plan. Unless the school or district purchases a plan, the tool becomes nearly unusable for individual teachers who are looking to speed up their grading workflow.
4. School AI
Rating: 4 /5
Pricing: Free for individual teachers. Paid plans are available for Districts.
Best For: Schools and teachers seek broad, AI-powered interactive learning environments with lesson creation and analytics to track student learning outcomes and that also include AI essay grading features. However, the platform can feel too broad and heavy for essay grading alone.
Pros:
- SchoolAI is a comprehensive AI platform designed that supports both teachers and students.
- Features “Dot”, a co-teacher AI agent that answers student questions, clarifies concepts, and provides real-time writing practice in secure workspaces.
- Lets teachers create lesson plans, quizzes, worksheets, vocabulary lists, syllabi, and rubrics tailored to specific topics and grade levels using SchoolAI.
Cons:
- At times, the platform feels like it’s trying to be everything for everyone and lacks clear specialization for either student or teacher areas.
- Teachers also report a steep learning curve when setting up custom AI agents and workspaces.
What Teachers Like:
Teachers love the Spaces feature in SchoolAI – interactive, AI-guided tutors that help students learn at their own pace. Beyond standard time-saving tools like lesson planning, assignment and rubric creation, they appreciate how easily they can create kickstarters, openers, and exit tickets right within the platform to make classroom engagement effortless.
What Teachers Don’t Like:
Teachers occasionally mention inconsistencies from the AI tutors they’ve created. For instance, one teacher shared that her History tutor agent kept giving incorrect dates and inventing sources while students were chatting with it to learn about the battle of Gettysburg.
5. Turnitin Feedback Studio
Rating: 4.5/5
Pricing: Institution-wide licenses only (not available for individual teachers).
Best For: Institutions that prioritize academic integrity and plagiarism prevention across large numbers of students. It’s ideal for universities, colleges, and districts looking to standardize plagiarism detection, rather than for teachers seeking fast AI grading or automated feedback generation on essays and written assignments.
Pros:
- Turnitin remains the gold standard amongst academic integrity and originality-checking platforms worldwide.
- It’s deeply integrated with most major LMS systems (Google Classroom, Canvas, Schoology, Blackboard, Moodle, etc.).
- The Feedback Studio interface allows teachers to comment directly on student writing with inline annotations, voice comments, and rubric-based grading.
- Combines originality checking with emerging AI-writing detection to help educators maintain academic honesty.
- Its large academic database including billions of web pages, academic journals, and previously submitted student papers making it highly reliable for detecting copied or paraphrased content.
Cons:
- Turnitin is primarily built for plagiarism detection rather than auto-grading or formative feedback.
- It doesn’t assign rubric-based grades or provide detailed writing feedback automatically.
- Teachers often report the interface feels dated compared to newer AI grading tools and can be slow to grade large class submissions.
- It’s also not accessible to individual teachers or small schools without an institutional contract, making it less flexible for classroom-level or even school-level adoption.
What Teachers Like:
Teachers appreciate Turnitin’s unmatched database coverage and its ability to catch even subtle plagiarism or paraphrasing. They also value the integration with existing LMS tools, and many use its originality reports as part of their academic honesty policies.
What Teachers Don’t Like:
Teachers sometimes find Turnitin’s interface unintuitive and its feedback tools limited compared to modern AI grading tools. Others note occasional false positives in similarity reports, especially for common phrases or references.
6. Class Companion
Ratings: 4.3 – 4.5 / 5
Pricing: Free for individual teachers. Paid plans available for Districts and Schools.
Best For:
Class Companion is best suited for schools and districts seeking a balanced AI solution that combines automated essay grading for teachers with formative learning support for students. It’s ideal for teachers who value iterative feedback for their students, data-driven insights on classes, and other accessibility features for diverse learners.
Pros:
- Class Companion is a solid AI-first assessment and tutoring platform designed to support writing, short-answer, DBQ, and formative assignments.
- It allows educators to create, import, or generate assignments and rubrics directly within the platform.
- Students can practice writing and receive instant AI-powered feedback that guides them toward mastery.
- Teachers can also review, override, or approve AI-generated grades, ensuring instructional control remains in human hands.
Cons:
- While the platform’s AI tutoring features promote iterative learning, some educators feel that it blurs the line between assessment and assistance, making it harder to ensure the authenticity of student work.
- The scoring can occasionally feel inconsistent across complex or creative prompts, and feedback sometimes lacks deeper nuance or contextual understanding.
- Advanced features such as integrity checks, data dashboards, and LMS integrations are reserved for paid district-level plans.
What Teachers Like:
Teachers love that they can enable multiple student submission attempts, allowing students to revise their work based on AI feedback and learn iteratively. It’s one of the only AI grading tools with accessibility features like text-to-speech, translation, reading level adjustments, and other accommodations that support diverse learners.
What Teachers Don’t Like:
Some teachers dislike that Class Companion is student-facing by default. They prefer to use it purely as a grading assistant rather than giving students direct access to AI tutoring, as it can dilute the grading process or lead to overreliance on AI help.
7. Kangaroos AI
Rating: 4 / 5 | Limited free plan.
Pricing plans are not publicly advertised for Kangaroos AI.
Best For: Educators exploring AI essay grading tools for the first time, it offers a gentle entry point without requiring complicated setup or steep learning curves.
Pros:
- Kangaroos AI is a relatively new entrant into the AI essay grading field.
- It provides an AI essay grader with rubric upload, allowing teachers to align grading criteria with their own expectations.
- It has basic AI grading tool features like bulk upload, rubric creation tools, short answer grading, and even a “Roo” AI teaching assistant.
Cons:
- One of the biggest drawbacks of Kangaroos AI is that its a fairly basic and an early-stage tool compared to more mature competitors like EssayGrader (essaygrader.ai) or Class Companion.
- It doesn’t yet offer integrations with popular LMS platforms like Google Classroom, Canvas or Schoology.
- The tool also lacks advanced reporting, grade calibration, and data insights that are now standard in most popular AI grading platforms.
What Teachers Like: Teachers appreciate that Kangaroos AI is easy to use, quick to set up, and helps with multiple teaching workflows in one place – from essay grading to quiz and lesson creation. This reduces tool-switching and subscription overhead.
What Teachers Don’t Like: Because the tool is newer, teachers may feel uncertain about long-term reliability, feature stability, or support quality. Some users also note that the lack of LMS integrations adds additional steps to their grading workflow – requiring them to manually upload and download essays instead of enjoying the seamless syncing offered by more established platforms.
Comparison table: 7 best AI essay graders in 2025
| AI Essay Grader | Rating | Free Plan | LMS integrations | Key Strength | Best for |
| EssayGrader (aka essaygrader.ai) | ?? 4.8/5 | Yes – up to 400 essays per school year. | Google Classroom, Canvas, Schoology | Purpose-built for rubric based essay grading for teachers. | Teachers seeking the most accurate, fast, fair and cost effective AI grading tool. |
| Magic School AI | ?? 4.3/5 | Yes- free for individual teachers. | Limited (no direct essay syncing) | All-in-one classroom pre: lesson plans, IEPs, sub plans | Teachers who want a free broader AI platform for class room activities beyond just grading. |
| Brisk | ?? 4.2/5 | Yes – chrome extension | Google Classroom, Canvas, Teams | Seamless, LMS-embedded AI assistant | Teachers who want a built-in light weight AI grader, lesson & quiz generation inside their LMS. |
| School AI | ?? 4.0/5 | Yes- limited | Google Classroom (basic) | AI co-teacher “Dot” and Student Spaces. | Schools that want interactive AI learning for students + light grading blend for teachers. |
| Turnitin Feedback studio | ?? 4.5/5 | ? (Institution only) | Google Classroom, Canvas, Moodle, Blackboard | Industry-leading Plagiarism detection | Institutions looking for academic integrity solutions over AI grading tools. |
|
Class Companion |
?? 4.4/5 |
Yes-free tier |
Google Classroom |
AI tutoring with formative writing feedback |
Schools that want AI tools to help students improve their writing while giving teachers powerful essay grading and feedback features. |
| Kangaroos AI | ?? 4.0/5 | Yes- limited | ? None currently | Simple setup, rubric upload, basic grading | New users exploring AI grading or other class room Gen AI tools for the first time |
What is the best AI essay grader overall?
Based on teacher reviews, the platform’s LMS integration capabilities, accuracy, security, and usability, EssayGrader (aka essaygrader.ai) consistently ranks highest in 2025 for rubric-aligned essay grading for teachers.
However, teachers looking for a broader all-in-one classroom AI platform (lesson planning, quizzes, scaffolding, feedback across different modalities) may prefer Magic School or Brisk for their comprehensive suite of tools. These have weaker essay grading functionality but are more holistic in their functionality beyond grading.
Frequently asked questions
What is an AI Essay Grader?
An AI essay grader is a tool that uses artificial intelligence and natural language processing (NLP) to automatically evaluate written assignments. It can provide scores, highlight grammar and structure issues, and generate feedback aligned to a teacher’s rubric, helping educators save hours of manual grading time.
What are the advantages of using an AI Essay Grader?
Unlike traditional grading methods, which are time-intensive and can lead to inconsistent results due to fatigue or human bias, AI Essay Graders provides instant, objective, and rubric-aligned evaluations every time. By automating repetitive grading tasks, these tools frees teachers to spend more time delivering personalized feedback and engaging with students thereby improving learning outcomes and classroom interactions.
Are AI essay graders accurate?
Most modern AI graders are highly accurate when paired with a clear rubric and human review. Tools like EssayGrader, Brisk and Class Companion use calibrated scoring models aligned with state standards to ensure consistent, unbiased grading. However, AI should be seen as a teacher assistant, not a replacement. Teachers and educators should always review final scores before giving the graded essays back to the students.
Are AI essay graders safe to use in schools?
Yes – leading platforms like EssayGrader, Brisk, Class Companion are FERPA and COPPA compliant, ensuring student data privacy. When looking for AI essay graders always verify whether the platform uses end-to-end data encryption, follows data minimization collection processes, and avoids collecting personally identifiable information (PII).
What are the best free AI essay graders for teachers?
Top free or freemium ai essay grader options in 2025 include:
- EssayGrader (aka essaygrader.ai) (up to 400 essays per school year)
- Magic School AI (free AI tools for individual teachers)
- Brisk (free for classroom use, Chrome extension)
- Class Companion ( free plan with optional upgrades)
Featured image by Realmac Software on Unsplash
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