Let's see. Geography class. Geography is learning about foriegn countries as well as our own. Go figure that flags of other nations would come into play.
One of the one things I loved about geography in school was precisely seeing all those world flags in each unit of the textbook (usually broken up by continents), and then memorizing them. One flag is above them all, ours, but a lot of those flags were cool. Heaven help us if little kids can't memorize flags as part of school study. I guess we ought to just unplug ourselves from the rest of the world completely, too. (no outside telephone, no world travel, no foreign language study, not foreign students, no world maps. then, maybe we would be safe as a country, if we could only dig our bomb shelters a little bit deeper)