More Education Needed

This sign was up on the door of the classroom where I taught this semester. The funniest thing about it? It's in the English department.

As a former lit major, I'm perhaps overly sensitive to punctuation errors (and of course, writing that sentence now insures that I'll make some mistake in this post), but I'm not alone: see the "Blog" of "Unnecessary" Quotation Marks for more fun.