It's May 3, and we're celebrating National Teacher Day. Our instructors grade exams in our high school correspondence courses, online high school courses and online middle school courses, but they do more than just put a numeric grade on a piece of paper or on an online exam. Our instructors call students by name and offer constructive feedback on every exam they grade. This way, students who want to earn a high school diploma at home feel like they are connected to a real teacher who is invested in their success. We are grateful to our instructors and thank them for all the hard work they do for the benefit of our students all around the world.