StarGrader is an AI-powered grading assistant for teachers that grades essays, math, lab reports, and assignments using custom rubrics. It provides detailed, personalized feedback and integrates with Canvas and Google Classroom.

How does AI grading work for teachers?

AI grading works by analyzing student submissions against instructor-defined rubric criteria. Teachers upload assignments, set grading parameters, and the AI evaluates each submission for content quality, argument structure, evidence use, and more — returning scored rubric categories with detailed feedback.

Can AI grade essays as accurately as a human teacher?

AI excels at evaluating measurable criteria like thesis clarity, evidence integration, and argument coherence with high consistency. It works best when paired with well-defined rubrics. Human review remains valuable for assessing originality and nuance, which is why StarGrader keeps instructors in the loop for final approval.

What file formats does StarGrader support?

StarGrader supports PDF, Word documents (.doc, .docx), and image formats for student assignment uploads. Grades can be exported as CSV for integration with learning management systems.

Is StarGrader free for teachers?

Yes, StarGrader offers a free plan that includes limited bulk grading, AI feedback, rubric creation, and CSV export. Unlimited plans start at $20/month with annual billing, and include a 60-day money-back guarantee.

StarGrader Blog

Why Educators Trust AI-Powered Grading

StarGrader helps teachers save an average of 10+ hours per week by automating rubric-aligned grading for essays, math, and lab reports across all major subjects.

According to education research, students who receive feedback within 48 hours show measurably higher revision quality and learning retention than those who wait a week or more.

StarGrader delivers AI-generated, criterion-specific feedback in under 3 minutes per essay — compared to the 15–30 minutes typical of manual grading — while maintaining rubric fidelity instructors can trust.

Over 500 educators across colleges, high schools, and AP programs use StarGrader to grade consistently at scale, with a 4.8 out of 5 average satisfaction rating.