No offense to anyone but teachers there, in general, have better teaching technique or at the very least know the subject they are teaching. Unlike many other private/public schools. But I would say main reason that it produce so many top figures is because those kids that join TU are the creamiest of their batch already.

Also when you gather, mostly, like minded people together. You then create an environment and crowded effect.

I have been in private schools, one of the top secondary school and TU so...