 Why are Interscholastic Sports called the last classroom of the day? Because they teach students important life lessons like teamwork, accountability, and perseverance. School sports are so much more than a game. They're about developing the whole person. That's why they're an essential part of every student's education. Encourage your student to participate in the last classroom of the day. Interscholastic Sports in Delaware. This message presented by the DIAA and the Delaware Association of Athletic Directors.