Ask HN:I`m in 3rd year and I need advice

I`m thinking of starting a startup and I`m 21 and in my 3rd year. But I have a option of going to a graduate school like stanford to learn more as currently i have very less knowledge and also it would provide me with essential global exposure.I have good academic record and a pretty decent chance of getting there. What should I do - Go to Stanford and then open a startup or go and work in a company for a few years and then start it. Currently I`m studying in IITK,India