For some schools it may be on par with creating a startup. Of course, these schools are likely the ones famous for taking up all your time. I'm referencing the

For some schools it may be on par with creating a startup. Of course, these schools are likely the ones famous for taking up all your time. I'm referencing the famously time consuming universities like Caltech, Carnegie Mellon, and MIT. And even within these schools it depends on your major. Harvard, I have no personal knowledge of. However, from what I've heard its not that time consuming and has a high level of grade inflation... Take that with a grain of salt though.