While I suppose it helps to elect a few extra Democrats, I have always been troubled by students voting at their colleges or universities. They are, of course, counted at their schools, which would seem to make their vote appropriate. (April 1 is rarely a holiday when the students are away.)
Do those students intend to stay at their colleges? Are they going to return to the homes of their parents, at least for a bit after finishing school?
Let me take you back to my own experience (and my bit of research) below the trivet.
On April 1, 1970, I was living in my college dorm in Western Pennsylvania between Pittsburgh and Erie and hard by the Ohio border. I spent that entire day ducking the census worker, as I did not wish to be counted.
I had turned 21 the preceding November and had registered to vote at my parents' home some 400 miles away in a New Jersey suburb of Philadelphia. That was where I was going to return after college and where I would stay for at least three years while I commuted to law school in Philadelphia. There was no reason for me to be represented by some rural Republican.
Consider this effect at truly big schools, such as Penn State. The census places people where they are rather than where they reside. Indeed, had I been at a hotel in New York City or Los Angeles on census day, I would have been counted there.
Consider the Constitution, which provides that the census is taken every ten years for the specific purpose of apportioning the House of Representatives. The current method does not even out, given that my home town (and my home county) have no residential schools, the nearest being Glassboro or Princeton.
What finally frosted me was that the members of Congress have exempted themselves from being counted in place. If they are in Washington, DC, they (and only they) may be counted at their homes in their districts.
Students don't "reside" in dorms. They leave for holidays and at the end of the academic year. I have never understood the desire to vote where one has no real interest.