In my three years of teaching I'm yet to have a sick day (now that I've written that I will probably be bound to my bed with some sort of ailment tomorrow or next week during Spring Break). Sure, I've had subs, but conveniently for me I've always been able to plan out lessons in advance. As all teachers know--SUB PLANS WILL BE THE DEATH OF YOU. When I start to write them I always ask myself, "Do I really have to be gone, this is just too much work!" And then I have to think about "will my…