That’s why the police were called. The person didn’t come by the office and the police arrived. It worked exactly as it was supposed to.
At Sandy Hook it only took 10 minutes to kill all those children & adults - before the police arrived!
This isn't a game of rock, paper, scissors, guns! This is real life and paper is going to lose every single time.
Now, it also didn't work in this case. The mother was able to get to her child without signing the paper. She didn't, however, take her child and leave. The police arrived and rather than being sensible, they arrested her for "failure to sign the magic paper". Good grief. It was her child, she was summoned by the school and then they claimed that she was trespassing. Idiocy.