Well, new to me. Today I had to take the children to a medical appointment, and that necessitated me taking them out of school.
At every one of the three schools that educate my children, I had to physically sign them out at the office. They all had sign out books, and won’t allow the child to leave unless there is a parent or a recognized “safe” adult there to pick them up.
In all our years at our previous school many kids came and went as they pleased, without the office knowing or even being aware. Personally I always made sure the office knew, but there was nothing formal to sign.
It’s a wonderful feeling knowing my kids are safe in school.