My mother's still in the middle of hers. It probably didn't help that for a good chunk of time, she's taught freshmen history, which in our district focused on the twentieth century. For a good long while, she'd spend the better part of a quarter on the subject. Of course, now they've got her teaching post-Reinassance to modern times, so she's got to condense things quite a bit.
Uh... What was the original topic again?