Where a teacher's negligent action injured a student, a school board does not need to make a showing that the injury was significant to conclude that no written warning is required before terminating the teacher's employment.The Illinois Appellate Court, 1st District, 6th Division, confirmed a Chicago School Board of Education decision.On Jan. 10, 2013, Ron James was teaching a class at Hyde Park Career Academy High School. According to James, a disruptive student entered his classroom at the end of sixth period …