I had a shotgun and .223 in the back window gun rack of my truck through middle school and high school (started driving at 14 with a school permit) with shells and rounds in the glove box. Nothing was ever locked where I grew up either; homes, vehicles, businesses.
Granted I grew up in a town with under 1,000 people and the closest ‘city’ to us was an hour away and had a population of 25k.
That was forty years ago and I feel a lot differently about things and the world is a different place but when I grew up more students and teachers had guns in their vehicles at school than didn’t. Everyone hunted, I pulled off and shot a coyote in pack that was stalking around one of my teachers herd of cows on the way to school one winter. I took the coyote into class and gave it to him since I had him first period.