Harvard is a notoriously easy school - once you get in classes are relatively easy. Grade inflation is rampant.

I say this as someone who got in (eventually chose to attend a different school for a variety of reasons) and with many friends who went there.

At Harvard, the primary thing you do is the extracurricular in your field of interest - whether that's law, activism or startups - is up to the individual student. Your grades, your education and your brand in society - Harvard takes care of that.