Didn't Turn In Syndrome (DTIS), usually effects middle school or junior high school kids, particularly males. While homework may actually get done, it ends up crumpled at the bottom of a backpack, stuffed at the back of a locker, or on the floor somewhere. The DTIS boy is clueless and usually has no idea what happened. He has no idea whether or not his homework was even done, let alone turned in.
Parent: “What? How did you get a D in your English class??
Son: “I don’t know…”
Parent: “Why is my son getting such a low grade?”
Teacher: “He hasn’t turned in any homework this term… I’m afraid he has DTIS.”
Parent: “Oh my God…”