Normally I would not do an entire post over a two-letter word (although those who have been subjected to my grammar/copyediting-Nazism might dispute that,) but if you are going to pick on someone about education, you'd better have all your i's dotted, t's crossed, and use the correct prepositions. Today, @BarackObama retweeted this:
"On" subjects? When your child brings come his report card, do you say, "What grade did you get on math?" Of course not. Rather, "What grade did you get in math?" Nit-picky? Sure, but that's half the fun of grammar. And another thing: Should the Democrats, the party that calls itself "progressive" really be giving F's anyway? F's are so twentieth-century.
Oh, and one more thing. At least now that we've seen Romney's report card above, we know more about his grades than we do about Obama's, since he has yet to release his college transcripts... KIDDING! (I know, Romney has not released his either.)