Executive, legislative and judicial. I like to think of them as The Head, The Shoulders, and the Heart. My weakness is spelling, but I somehow typed all three without Firefox correcting me.
Anyway, kids don't bother remembering stuff they don't feel they need to. Most people don't feel they need to know how the government works so long as it doesn't get in their way. But if everyone was angry at the government they'd learn real quick. I work in a county planning department and I see people who have intimate knowledge of government bureaucracy. When someone needs a permit and pay a fee to put up a fence or sell half their property, they study how to get around the walls the government puts up.
My point is, kids don't need to know the branches of government unless they want a good grade on a social studies test. Sometime after high school after those kids are paying taxes and own property they will have a stake in what goes on in government. That's when they will learn and remember the basics.
