They keep their keep the drivers license and license plate of their home state and they pay out of state tuition. Even if they live in a state for 4 years while going to school they are not considered residents and do not get to vote or receive in state tuition. There are things they can do like buy property that changes that but other wise they are guest. Why should nonresidents vote in local elections? They are still allowed vote in their home state.
Same is true for the military by the way. I lived in north Carolina for three years and I never carried a North Carolina drivers license paid their income tax or voted in their elections. My wife did though because she was considered a resident.