In the QS index, the National University of Singapore is higher than HKU in academic reputation, employer reputation, teacher-student ratio, citation of each paper, sending and receiving exchange students, etc., while HKU is higher than the National University of Singapore in per-teacher papers, international teachers and international students.

In the cross-disciplinary or professional evaluation, HKU's dentistry, psychology, philosophy and education are higher than those of the National University of Singapore, and other majors, including architecture, machinery, aviation manufacturing, chemical engineering, medicine, environmental research and business, rank higher.