Plus - a lie in!

Banner seen on the wall of a school:

'Arriving at school at 9:05 means you are ten minutes late. That's fifty minutes a week, or over three hours a month, or over thirty hours in a school year. Believe it or not, that is a week out of school!'

Now, I'm no child psychologist, but I was, for several years early in my career, a child; and I strongly suspect that the lesson that banner is supposed to convey, and the lesson any right-thinking child is actually taking away from it, are two very different things...