[pfranz]

The parent is one data point. Perhaps the one kid leans on school for social connections at this point in their life? Some kids are loaners (but still need social connections) others are very social.

Another commenter pointed out that there were only a few school-aged kids in their neighborhood. I noticed when I graduated high school there weren't many younger school-aged kids in my neighborhood even though I grew up with a good number of people nearby. When my sister moved into a newly built neighborhood when they had kids other young families moved in, too. I think neighborhoods tend to cluster with families, it cycles and may not always catch on every generation and some kids get stuck.

Those situations sound incredibly depressing, but I don't think it necessarily reflects all of society.