WEll ! there are two meanings for this sign. The original one being that its warning you about the school so you should slow down your vehicle so that the children at school after school, when they're going back home, dont get injured. But if you see the funny side, most students dont like to go to school. So if they read this sign, they've got a good reason to miss school atleast for a day.
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: . I hope you get my point. :cheer: