Madison teachers who missed school last month to attend protests and turned in fraudulent doctor's notes have been given until April 15 to rescind those notes, officials said Thursday. The district received more than 1,000 notes from teachers, human resources director Bob Nadler said. A couple hundred of those were ruled fraudulent because they appeared to be written by doctors at the Capitol protests against Gov. Scott Walker's proposal to limit collective bargaining. Teachers who don't rescind fraudulent notes could receive a disciplinary letter of suspension, the most serious form of discipline aside from termination, Nadler said. The suspension would...