My children all attended colleges out of their home state. They were registered to vote in their home state, and voted via absentee ballots. They did this to keep their dependent status, thus allowing me some tax breaks while paying for their college. it's not a big deal. The very concept students need to travel home to vote is either a partisan lie to continue the claim of conspiracy, or pure unadulterated ignorance of absolutely profound proportions.
As stated, there is a new phenomenon - and not found only in VA. And that is college students are desiring to register to vote in local elections. To do so they have to change their residency status. And changing residency status involves more than just registering to vote locally. There is the required change of DL, vehicle registration, etc. AND there is the change of status from dependent to independent, which changes financial aid awards.
Or it could be the people running around registering students to vote don't know what the fuck they are doing and accidentally registering students to vote in places the student is not a resident, thus kicking off the whole thing.