Please enjoy this well-crafted rant. It's full of good nuggets. I've never been a teacher, but I could still identify with point #5, having recently become reconciled to the fact that I've spent 34 years being "the opposite of cool" myself.
Be so kind as to avert your eyes as the author shoots himself in the foot at the end of the first paragraph: "I'm not smiling because I think you're smart; I'm smiling because you just used that word wrong." He's a music teacher, after all, not an English teacher.