Strolling into the large classroom to retrieve one of my students, I glimpsed her out of the corner of my eye, and I knew something bad was on the way.  She was still seated, but bore a look of sheer animal rage.  As she jumped up and leapt toward me, I had just enough time to lift my right arm to shield my face (as I had been taught to do).  She clamped down so fiercely on my forearm that she and I essentially became one.  Her teeth cut into me as she threw me up against a desk.  Time seems to freeze in such moments.  I remember falling back on the desk, completely unable to move.  The next thing I remember is feeling a release as a large woman pulled her off of me.  I was left half-dazed.  Her teeth had left their imprint on my arm and I was bleeding....