Apples have become symbolic of the teaching profession. You have probably all seen a stock photo of a teacher's desk. The work surface of the desk is mostly empty with the exception of a pen and a perfectly sharpened pencil. A neat little stack of books is situated in the corner. Sitting on top of the books is a flawless, shiny green apple that gives off a celestial glow. This is not reality. In twenty-first century schools, students do not give shiny green apples to their teachers. A student once left an apple core on my desk after lunch once, but that was both accidental and unwanted. A...