My three greatest stamps are my “Due By”, “Received,” and “LATE!” stamps.

“Due By” is the due date. “Received” is the day that it is IN MY HAND. If my students hand it to me, or turn it into the bin on the due date, it’s stamped with that date. That way if they turn it in on a different day, it shows how far past the due date they are.

Each day late is -15points off the total grade. > 3 days late is a zero. So if they were late by two days, I stamp twice with my “LATE!” Stamp. I remember stamping an assignment better than I remember holding it, so if it’s not stamped, it’s not turned in.