I assign being late...
I've kept doing it for the last several weeks. I'm always at least a few minutes late for school (or then I arrive right at the minute when the teacher comes). It wouldn't trouble me that much but my absences on the attendance lists may soon look quite troublesome...
(We have a system in which you get one absence mark if you're three times late for a lesson - not that bad, I know, in many places you don't even get in if you're late.
But not too nice anyways.)