Singapore Universities Use AI to Speed Up Grading

Grading hundreds of math and physics exams used to take professors weeks of eye-straining work. Now four Singapore universities have found a way to speed up the process while keeping humans in charge.

Nanyang Technological University, Singapore University of Technology and Design, National University of Singapore, and Singapore Institute of Technology now allow AI tools to assist with grading student assignments and exams. The tools don't replace human judgment but make the process faster and more consistent.

At NTU and SUTD, professors use Gradescope to scan handwritten math and physics answers. The AI groups similar solutions together so teachers can grade batches of identical work at once, saving hours of repetitive checking.

SIT took things further with AI-Orate, a chatbot that quizzes food technology students on complex concepts. In October 2025, about 50 students programmed industrial machines and then explained their reasoning to the chatbot, which asked follow-up questions just like a human examiner would. The process shrunk assessment time from one week to two days.

All four universities enforce strict safeguards. Human teachers must review every AI-generated grade before students see their results. Students are told when AI is used for grading and can request manual reviews of their scores.

NUS has the toughest standards, allowing only one AI tool that has been validated against expert human graders. The tool grades argumentative essays for English placement tests and performs each grading twice to ensure accuracy.

Two other Singapore universities, Singapore Management University and Singapore University of Social Sciences, still prohibit AI grading entirely. They cite concerns about accuracy and reliability as their main reasons.

The Ripple Effect

The shift to AI-assisted grading could transform education beyond just saving time. Professor Wong Shin Yee at SIT points out that chatbots can create personalized assessments for large classes where individual questioning would be impossible. The technology could even evaluate how well each student understands group projects by quizzing them separately.

The adaptive nature of chatbot conversations lets students demonstrate knowledge in ways written exams cannot capture. As AI tools become more sophisticated and trustworthy, they might help teachers spend less time on repetitive grading and more time on what matters most: actually teaching students.

Singapore's careful, human-supervised approach shows how AI can enhance education without replacing the judgment and expertise that only experienced teachers bring to the classroom.