Even since I was 10 or so I would often come back to school on my own. Then let myself into our apartment. Eat some lunch, do homework, play until my parents came home in the evening. I was effectively often alone for about 4 or so hours. I wouldn't let my kid do it here in US. Not because I wouldn't trust them or think it is dangerous. But because I am afraid what neighbors, school, CPS would do. My co-worker let hi…
Ironically, the suburbs where it is "as safe as they come" seems to be the kind of place where these overzealous neighbor stories come from most often.
Go up a few blocks to Park Slope, an extremely safe and cleaned up place, and there's no kids in sight.