StarGrader

freemium

StarGrader is the #1 AI grading tool for teachers. Grade essays, math, lab reports, and assignments in minutes with rubric support. Save 10+ hours weekly. Try free.

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About

StarGrader is an award-winning AI grading tool designed exclusively for educators from K-12 through graduate-level institutions. Unlike generic AI tools, StarGrader is trained to evaluate the complexity of high school and university-level academic work, understanding discipline-specific terminology across subjects ranging from literature and history to STEM fields. Teachers can upload PDF, Word, or Docx files and receive instant, consistent, and personalized feedback within seconds. Rubrics and example submissions can be added to calibrate grading criteria to each teacher's standards. Grades can be downloaded as a CSV file for seamless import into any LMS, including Canvas, Blackboard, and Google Classroom. Beyond grading, StarGrader also functions as a course material creator — generating custom assignments, quizzes, and exams tailored to a teacher's style. Two powerful academic integrity features round out the platform: an AI detection tool that identifies content generated by ChatGPT, Claude, or other AI tools, and a plagiarism checker that scans submissions against billions of online sources. With a 4.8/5 satisfaction rating from verified educators, implementation across 500+ institutions, and recognition in EdTech research at SDSU and the Arete Innovation Studies, StarGrader is a trusted platform for modern assessment. It is ideal for teachers, professors, and academic administrators looking to reclaim time while delivering high-quality, individualized student feedback at scale.

Key Features

AI Grading with Rubric Support: Instantly grades PDF, Word, and Docx submissions using customizable rubrics, delivering consistent scores and personalized feedback for any subject or grade level.
AI Content Detection: Identifies AI-generated content in student submissions, detecting text written by tools like ChatGPT and Claude to help maintain academic integrity.
Plagiarism Checker: Scans student work against billions of online sources to detect copied content and uphold academic standards.
LMS Integration via CSV Export: Download grades as a CSV file ready to import directly into Canvas, Blackboard, Google Classroom, or any other learning management system.
AI Course Material Creator: Generates personalized assignments, quizzes, and exams tailored to the teacher's style, curriculum, and subject area.

Use Cases

A high school English teacher uploads 30 student essays and uses StarGrader to generate rubric-aligned scores and personalized feedback within minutes.
A university professor scans submitted lab reports through StarGrader's plagiarism checker before finalizing grades to ensure academic integrity.
A department chair uses StarGrader's AI detection tool to identify potentially AI-generated assignments across multiple course sections.
An educator creates a full set of quiz questions and a midterm exam for a history class using StarGrader's AI course material creator.
A K-12 school district deploys StarGrader across 500+ teachers to standardize grading practices and reduce administrative workload district-wide.

Pros

Massive Time Savings: Saves teachers 10+ hours per week by automating the grading and feedback process for any type of academic assignment.
Built for Academia: Specifically trained on high school and university-level academic content, making it far more accurate for complex assignments than generic AI tools.
Seamless LMS Compatibility: CSV grade export works with all major LMS platforms including Canvas, Blackboard, and Google Classroom, eliminating manual grade entry.
All-in-One Academic Platform: Combines grading, feedback, AI detection, plagiarism checking, and course material creation in a single tool.

Cons

Web-Only Access: Currently available only as a web application with no dedicated mobile app, which may limit accessibility for on-the-go grading.
Requires Human Review for Edge Cases: While highly accurate, AI grading may still require teacher review for nuanced or highly creative assignments where subjective judgment is critical.
Dependent on Rubric Quality: Grading accuracy is best when rubrics and examples are provided; results may be less precise without clear grading criteria.

Frequently Asked Questions

StarGrader can grade essays, math assignments, lab reports, and general academic assignments across virtually any subject, from K-12 to graduate-level university work.

Yes. StarGrader allows you to download grades as a CSV file that can be imported directly into Canvas, Blackboard, Google Classroom, or any other LMS.

Yes. You can upload custom rubrics and example submissions to calibrate the AI grader to your specific grading standards and criteria.

Yes. StarGrader includes a built-in AI detection feature that identifies content generated by tools like ChatGPT, Claude, and other AI writing assistants.

StarGrader offers a free trial so educators can start grading without a credit card. Paid plans unlock higher volume grading, advanced features, and institutional access.