It may also be a legacy issue. This - i imagine - hasn't always been the case. If a two parent household only had a single parent working this idea would be quite sound, imo. That ideally shouldn't be the schools responsibility here. I want them to focus on what really matters, education.

However these days it's often necessary for both parents to work, and thus no one is available to watch the kids (and i'm glossing over single parents for simplicity).