Different ways of thinking

While I returned by metro this afternoon, I saw one thing that upset me. At the second stop metro came up 8 children, more or less of 6 years, attend with two person. And I starting to reflection….. in Italy the teacher doesn’t think to take a children for a walk , furthermore in metro….are they crazy? when there is a school travel by Pullman, usually the teacher count 2 o 3 turn.