AI Grading Tools Compared: What Works Best for Math, Science, and English?
AI-powered grading is no longer a futuristic idea—it's already transforming how teachers mark and respond to student work. But not all AI grading tools are created equal, and their effectiveness often depends on the subject being assessed. In this post, we compare the top AI grading platforms for Maths, Science, and English, looking at how well they handle handwritten work, reasoning, extended writing, and technical content.
Best AI Grading for Math: Graded.Pro
Why it works: Graded.Pro is designed to understand not just the final answer but the method used. It can interpret typed or handwritten calculations, diagrams, and reasoning steps in structured Maths problems.
- Supports full working and step-by-step answers
- Handles scanned work and photos from student notebooks
- Allows teachers to override AI scoring and add annotations
- Viva-voce AI checks can quiz students on how they arrived at their answer
Best AI Grading for Science: Graded.Pro
Why it works: Science assessment often includes diagrams, data analysis, short explanations, and lab reports. Graded.Pro handles these formats well and supports both structured and discursive responses.
- Accepts graphs, charts, and labelled diagrams
- Capable of grading short and extended written answers
- Feedback includes voice and text comments with scientific accuracy
- Teachers can ensure key marking points are covered via custom rubrics
Best AI Grading for English: Scribo AI
Why it works: Scribo AI is purpose-built for English and literacy marking. It focuses on grammar, coherence, structure, tone, and writing conventions. It also helps students improve their drafts with real-time suggestions.
- Targets narrative, persuasive, and analytical writing
- Supports Google Classroom integration
- Designed to highlight strengths and areas for improvement in essays
- Includes originality checks and sentence-level feedback
Honourable Mentions
- Gradescope – Excellent for higher education Maths and Science exams, but less suitable for open-ended or creative work.
- MagicSchool.ai – Helpful for drafting rubrics and giving general feedback but not a full grading platform.
- ChatGPT – Can provide insightful commentary on student writing but requires manual copy-paste and careful oversight.
AI Grading Tools by Subject – Comparison Table
| Tool | Best For | Maths | Science | English | Handwriting Support | Teacher Override |
|---|---|---|---|---|---|---|
| Graded.Pro | Comprehensive multi-subject grading | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes |
| Scribo AI | English and literacy writing | ❌ No | ❌ No | ✅ Yes | ❌ No | ✅ Yes |
| Gradescope | STEM exams & university-level work | ✅ Yes | ✅ Yes | ❌ No | ✅ Yes | ✅ Yes |
| MagicSchool.ai | Rubric and feedback drafting | 🟡 Limited | 🟡 Limited | 🟡 Limited | ❌ No | ✅ Yes |
| ChatGPT | Manual grading assistance | 🟡 Limited | 🟡 Limited | ✅ Yes | ❌ No | ✅ Yes |
Which AI Grading Tool Should You Use?
If you're teaching multiple subjects, Graded.Pro is the most versatile and powerful option—handling everything from a Year 8 Math worksheet to an A-level Chemistry diagram analysis. For English teachers focused on essay writing, Scribo AI is hard to beat for sentence-level feedback and tone guidance.
Gradescope remains a strong contender in higher education, while tools like MagicSchool.ai and ChatGPT are best seen as assistants rather than complete grading solutions.
With the right tool, AI can genuinely reduce marking time while enhancing the quality and consistency of feedback. Just make sure to stay in the loop—the best AI grading still keeps the teacher in charge.