Again policy dependent.
Our kid was out of the country for 27 months doing a Peace Corps assignment and it took us MONTHS to convince our insurance company to drop her from our policy. Months. They claimed she might come home and drive. No…not from that distance. And she was prohibited from driving in country by the PC, and our policy would not have covered her out of the country anyway.
For college students…our plan offered a $100 “away at school discount”. Every penny counts.