There's no right or wrong answer as everyone has their own opinion. We live relatively close to the school. 15 min walk tops. There is no "major" roads to cross, but one road can get busy. Kameron started walking alone this year, when he can be bothered LOL. He is 11. I would drive the other two to school. If I have something on though they have all had to walk together, which I am more comfortable in letting them do, than walking alone.