An eighth-grade teacher claims that she was fired after refusing to adhere to a school policy that banned marks lower than 50 percent, even when students handed in no work. Diane Tirado left her students a message on the whiteboard on Sept. 14, her last day teaching history at a school in Port St. Lucia, Florida: “Bye Kids, Mrs. Tirado loves you and wishes you the best in life! I have been fired for refusing to give you a 50% for not handing anything in. (love) Mrs. Tirado”