Sad.

When I was a child, I always had with me a multi-tool Swiss army knife, including at school, because I was very frequently building various things, or disassembling others to see how they were made. That early experience was very influential in becoming a successful engineer.

Decades later, as an adult, I was astonished to learn about the so-called "no tolerance" policies of many US schools, where the possession of even a small knife or even of less dangerous tools may be a reason for severe punishment.

Obviously, as a child, starting with the second day of school when 6-year old, I have always gone to the school and back, every day, alone, even if initially that was about a half hour of walking and then the later schools required long commuting by public transportation. Also none of my colleagues have ever been brought to school by someone else, and like me they did not have any contact with their parents since morning till late in the afternoon. All this was considered normal at that time.