Is it a good idea to go to a university just because of its high international ranking? I'm an international student and I'm currently studying pure mathematics in undergraduate level with a relatively low GPA (~3.5/4.0). I've recently read so many positive reviews about the universities in Singapore. I checked the "National University of Singapore (NUS)" on the internet for its international ranking and it was ranked 9th in mathematics!

How much do you think the ranking of a university positively affects my future career? For example, one of my dreams is that I can study in some Ivy-league university in the USA or some grand ecole university in France like Paris Sud 11 in the future, but because of my low GPA I'm afraid that that will never happen for me. Do you think that going to the NUS can help me to get accepted into world top universities in the future?
Is it a good idea to go to “National University of Singapore”


It may be. I have recently visited NUS, and talked to a lot of smart faculty and some truly outstanding students. Personally, I can only recommend both NUS and NTU Singapore. Singaporean universities are well-funded and offer a reasonable research environment. Singapore itself is also a nice place to live, with a quite interesting mixture of different cultures, lots of food, high standard of living, etc.


  just because of its high international ranking?


Oh god no.

If you want to go to NUS, then because of the reasons stated above. It think convincing the world that university-level rankings are a good thing is the largest disservice that the US has done to research. Let me make this clear - if you graduate from NUS and do uninteresting research, nobody will hire you. If you graduate from another reasonable university and do good research, you will find a post. 


  Do you think that going to the NUS can help me to get accepted into world top universities in the future?


Only for the reasons stated above - NUS has an environment that certainly enables you to do world-class research. For this reason, NUS may certainly help you get into a top university, but it does not make you accepted. The hard part (being a good researcher) will still be required from you.