Attendance Quiz

Ok, so I think I have finally found a way to get my students to class on time.  Nothing is more annoying than tardy kids.  It drives me crazy, and if you can imagine me crazy, that's not a good thing.  Here it goes... I LOCK THEM OUT!!!!  I really do.  I lock the door prior to the tardy bell ringing, and close it once it has rung.  As I take attendance, I can see those adorable (late) faces at the window of my door, wondering "what the heck?" The way it directly affects their grade, is, I assign an Attendance Quiz to the assignments that day, which just means they get 15 points for being on time, and zero for being tardy...I LOVE IT!  It has started to work, I think.  Some of the other teachers in my hall are doing the same thing, and it's hilarious to hear kids in the hall saying, "Oh oh, it's an attendance quiz again!"  I don't know about you, but it is aggravating to have to repeat myself almost on a regular basis.  It's kind of cute too, when I hear a student of mine ask one of his classmates who's sitting close to the door, to  let someone in.  That happened today, and I told him, "don't you dare!"  Ooo, I'm so mean.  The funny thing is, my students still like me.  Maybe they don't get it.