Grading Time Calculator for Teachers
This free grading time calculator shows how many hours you spend marking papers each week and each year. Enter your class size, how many assignments or exams you grade, and how long a single paper takes you, and it does the math.
It then estimates how much of that time an AI grader like Proctor AI gives back, assuming you still review and approve every paper. Nothing is stored, and you do not need to sign up to use it.
How much time does grading really take?
Marking is the largest time sink in teaching. A class of 40 descriptive papers at 6 minutes each is 4 hours of work, and most teachers do that several times a month on top of lesson planning. Over a school year, those hours add up to entire working weeks spent marking.
How this calculator works
- Manual time per week = students per class x assessments per week x minutes per paper.
- AI-assisted time assumes the agent grades each paper and you spend about 20 seconds reviewing and approving it.
- Hours saved is the difference between the two, shown per week and across a 40-week school year.
- All numbers are estimates you can adjust. Your real marking speed is the best input to use.
How to cut your grading time
Proctor AI splits a single class PDF into individual papers, grades each against your rubric, annotates the page, and drafts feedback, all in minutes. You stay in control and approve every mark. Teachers use it to turn evenings of marking into a quick review.
Frequently asked questions
How many hours do teachers spend grading?
It varies by subject and class size, but many teachers spend 5 to 15 hours a week marking. This calculator gives you a personal estimate based on your class size, workload, and how long a single paper takes you.
How does an AI grader save grading time?
An AI grader reads each answer sheet, scores it against your rubric, and drafts feedback in seconds per paper. Instead of marking from scratch, you review and approve the AI's work, which is far faster than grading by hand.
Is this grading time calculator free?
Yes. The calculator is completely free, needs no sign-up, and stores nothing. Proctor AI itself also has a free plan so you can try AI grading on a real set of papers.