I’ve been known to send a note if any of the kids are out, usually along the lines of “Little Johnny Smith was out of school yesterday with their parents. Please contact me, Daddy Smith, if you have any questions”.
Only got the robo-calls.
At our school, we have to call the office (or write an e-mail) to let them know our boy is staying home. They don’t want to know why - but rather that he’s not there per the parent’s permission — namely that he has not been kidnapped or somehow got lost. So, it’s purely a safety measure.
“Out with parents” wouldn’t work at most schools if you want Little Johnny to make up his work. There has to be a doctor’s appt or some other specific reason or he’ll get a 0 for the day which messes with his GPA.