Yes, Yorkie, you are correct about walking to school in the old days. However things have changed. Every village had at least a primary school. But over the years it was decided they were uneconomical and had to close. When there was uproar the relevant Council immediately said "hold on, we will provide a free bus service to the brand new large school sometimes miles away."
So the Councils are now stuck with it. Yorkie is right that walking doesn't seem to be an option now, but buses were used by schoolchildren even if they had to pay when I was a child---and thats a long time ago.
Believe it or not around about 1945 a small bus, presumably Crosville, used to come around midday right up to Colwyn Bay Grammar School, now Eirias, and start off with pupils, me included, and take them close to their homes, I lived in Rhos, for their midday meal. And then you caught the service bus back.
That was if you absolutely hated the school dinner.