I went, "Wait a minute-- so all of them knew how to swim already?"
Them: "Well, they have to. Swimming is required in gym class."
Me: "But what if they don't know how to swim?"
Them: "They teach them how to in elementary school. Is America different? Are there a lot of Americans who don't know how to swim?"
Given that I still don't know how to swim, I was surprised (and felt so inadequate!) to hear that they all learn how to swim in elementary school! American school districts can only wish for the sort of money that lets them put a pool in every elementary and middle school. And I cannot imagine trying to teach a whole class full of first-graders how to swim!