<p>How would any college know what ECs you are doing? You don’t report them somewhere. There isn’t some master registration system that all gets funnelled back to the administration. They don’t go on your transcript. Do what you want to do. And if this is your first semester- as it sounds like it is- keep in mind its not at all unusual to get your academic studies in order before you can find room for more and branch out to things beyond classes. </p>
<p>Though I think you will be personally missing out on a lot if you only study. It’s not good for your development. As a professor I would MUCH MUCH MUCH rather my students miss the occasional miss class to run a festival, go on a team trip, go to hear some cool speaker on campus than just show up for class and miss all that the university experience has to offer.</p>