From Puppy Blender:
LET YOUR CHILD walk to school. “There are many reasons why the strong trend against small freedoms for children is a bad thing, but the best is this: The choice is not actually between more safety for your child and, well, less safety, but between safety today and safety tomorrow.”
I'm not against allowing kids to walk to school - I did it. I walked to grade and middle school, and rode my bike to high school or took a bus. I even walked the 4+ miles a few times.
NYT article here.