Sai demonstrated academic excellence as he achieved 4 A* for Maths, Further Maths, Physics, and Philosophy at A-level programme. Previously, at GCSE programme, he achieved 10 A* grades and 2 A grades, including an A* with distinction in Further Maths. Whilst doing his GCSEs, he mentored younger students.

He participated in UKMT Maths Challenges, achieving Gold and Silver certificates as well as qualifying for the Junior Kangaroo.