Originally Posted by DJ Shaun

All our public elementary schools have bus service. Most high school students get transit passes if they live too far to walk.

Here's what I've observed I'm in my city:
Some parents send their kids to a school outside their district so they don't qualify for the bus service so they have to drive them in.
Some parents live to close to get bus service (ie. close enough to walk) so they drive them in on there way to work.
Some parents are afraid of letting their older kids walk/bike on their own.
Some parents are always running late so they drive their kids in since they missed the bus.
There's also no bus service for those who send their kids to before and/or after hours childcare.

In my case, the school is across the street so we'll walk with them until they'll be responsible enough to do it themselves.