I think you're struggling to imagine the impact that good public transport has on a cities design. Schools, parks, shops, sporting facilities all start congregating around transport stops/hubs so basically everywhere you need to take kids is within a 5 minute walk of one another.

> yeah, now imaging you have two of them going to two different schools, each 40 minutes walking distance from home, different directions and your office in somewhere else too.

I can't imagine why you would send them to different schools, unless one is a high school in which case they're old enough to get there by themselves. For most people the school they're taking the kids to is right next to the transit stop they'll be taking to work.