As the title suggests, it is a story where a child discovers the joy of walking to school.
This is a dystopic novel.
At their age, they use teleportation for their travel. They are very germophobic.
No one goes out of their houses physically.
One day, the child goes off to school (or returns, I don't remember) on foot, because the teleportation thing was not working. Then he enjoys it and goes to school and returns back physically. Everyone is shocked (and disgusted, I guess?).
Well, that's the story. I have no idea when or where I read it.