I'm one of the teachers for the 1-3-year-olds Sunday School class at my church. The kids always seem to take their shoes off. Our only rule is that they have to put them against the wall so no one trips on them. Some of the people looking in our class say things like "Oh, is this the shoe-optional class?" But I'm glad the head teacher lets them take their shoes off so they at least get an hour to run around barefoot.