My goodness.
Yup, I walked or rode my bike to and from school from K or 1st grade on. My kid goes to the same school I did, we live in the same neighborhood I grew up in, and many kids do walk. Mine could, we are close enough, but, because I judge that she is NOT mature, or savvy, enough, I have her ride the bus. I don't "walk her to the stop", but then, the bus picks up at the end of our driveway,and I watch her from the door until she's on the bus. When she was 4 and 5, I DID wait with her. The drivers are not allowed to let them off the bus at the end of the day unless the parent is at the stop or waves to them from inside.
This year she ASKED me to PLEASE, Mommy, don't let the other kids see me waiting with her, could I stay inside?