Did you happen to notice that Threadless is having a back-to-school sale? All shirts normally $15 – $22 are just $12 each. The new(ish) Threadless prints are just $25 each, too, if those are more your speed.
I don’t know that anyone is ever going to accuse me (or my kids) of being too cool for school, but we do love Threadless Ts. Heh.