AI paper grader for
essays & research
Grade essays, research papers, lab reports, and term papers against your rubric. Upload any written workâdigital or handwrittenâand get scores plus detailed feedback in minutes.
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From Upload to Grade â Any Paper Type
Essays, research papers, lab reports, term papers. Digital files or handwritten scans. One rubric-based grading engine handles every format.
See GradeLab in action
Watch how AI grading and online assessment work end-to-end, from upload to results.
For tests and quizzes, use our test grader. For essays specifically, see our AI essay grader. For full exam workflows, explore AI grading.
Online Paper Grader With Rubric-Based Precision
Grade every type of academic writingâresearch papers, lab reports, term papers, and essaysâwith the same rubric engine. APA, MLA, and Chicago citation awareness included.
Essays & Research Papers
Grade narrative essays, argumentative papers, and research documents against custom rubric criteriaâthesis, evidence, structure, and grammar all scored separately.
Lab Reports & Term Papers
Scientific lab reports, case studies, and semester-long term papers graded end-to-end. No page limitâupload a 30-page paper and get a full criterion-by-criterion breakdown.
APA, MLA & Chicago Citation Awareness
Include citation accuracy as a rubric criterion. The AI flags missing, incomplete, or incorrectly formatted citations and factors them into the final score.
Handwritten Paper Upload & OCR
Upload a scan or photo of any handwritten assignment. OCR converts the writing to text and the paper grader applies your rubric automatically.
Bulk Upload & Batch Grading
Upload an entire class worth of papers at once. The system identifies each submission by filename or student ID and grades them all in parallel.
Rubric Scores & Written Feedback
Every submission gets a per-criterion score and written comment. Students see exactly why they earned each mark and how to improve their writing.
How the Online Paper Grader Works
Set your rubric â Upload papers â Get grades and feedback in minutes
1
Build Your Rubric
Define grading criteria for content, structure, citation style, and writing quality. Set point values for each criterion so the AI grades exactly the way you would.
2
Upload Papers
Upload essays, research papers, lab reports, or term papers individually or in bulk. We accept PDF, Word documents, and scanned or photographed handwritten work.
3
Receive Rubric-Based Grades & Feedback
Every submission gets a per-criterion score and written feedback comment in minutes. The paper grader explains exactly what earned or lost marks on each rubric point.
4
Review, Adjust & Release
Review any AI score, override it with one click, and add your own comments. Release grades to students when you're satisfiedâor export results to your LMS.
Paper Grader FAQ
What is an online paper grader?
An online paper grader is AI software that scores essays, research papers, lab reports, and term papers against your rubric. Upload any written work and receive a grade plus detailed feedbackâwithout reading each paper manually.
How is a paper grader different from an essay grader?
A paper grader handles a broader range of academic writing: research papers, lab reports, term papers, case studies, and essays. An essay grader focuses primarily on narrative or argumentative prose. GradeLab supports both with the same rubric engine.
What citation styles does the paper grader understand?
The AI is aware of APA, MLA, and Chicago citation conventions. You can include citation accuracy as a rubric criterionâthe system will flag missing or malformed citations and factor them into the final score.
Can I grade multi-page research papers and lab reports?
Yes. There is no practical page limit. Upload a full 30-page research paper or a 10-page lab reportâthe AI reads the entire document, evaluates each rubric criterion across all sections, and returns a complete breakdown.
Can I upload handwritten papers?
Yes. GradeLab includes OCR for handwritten work. Upload a photo or scan and we convert it to text, then apply your rubric. This is useful for in-class handwritten assignments and blue-book exams.
Do I get rubric-based grades and feedback?
Yes. You define the rubric criteria; the paper grader applies them to every submission and returns a score plus detailed per-criterion comments. You can review and adjust any grade before releasing it to students.
How do I bulk upload papers from multiple students?
You can upload a batch of PDFs or Word documents at once. The system automatically identifies each student's submission by filename or ID, grades them all in parallel, and compiles results into a single class-level report.
Is there a free trial for the paper grader?
Yes. Try GradeLab free with your own papers and rubrics. No credit card is required to get startedâupload your first paper and see grades and feedback within minutes.