Absolutely this. My parents would take an impromptu vacation toward the tail end of winter and every time they basically just told the school 'we're leaving, give him the homework he'll be missing, end communication.'

Years later I was having dinner with a coworker and his teacher wife and explained it to her. "Yeah we'd go to like science exhibits and museums and all, it was really fun!" She was just aghast. Like 'y-you can't just t-take kids out of school?!'