I am speechless. Mark was my old boss and my mentor. He gave me my start, unbelievable student experiences, encouragement, and support. It was clear how passionate he was about his students and I hope to be half the person he was to my students. My heart goes out to the Harris family. Although it was cut short, know how much he impacted the world. Helped hundreds of students. Changed lives. The world will forever be better because of him.