When was the last time you visited America? :) American children do not use calculators in school. They learn the same math as everyone else. In American villages, everyone has a toilet in their home, not in the woods. And, in the USA, there are toilets available almost every five minutes on road trips. Every has station has them, there are rest stops, cafes, restaurants everywhere with free toilets. The infrastructure in our countries is entirely different, they are not comparable in any way.