You are entering a school area. The five-sided "schoolhouse" shape is used only for school signs, and lower speed limits usually apply when children are present.
Drop to the school speed limit during posted hours or when children are present. Expect the unexpected: balls, bikes, and small pedestrians who do not look first.
House shape = schoolhouse. The pentagon is the only sign shaped like where the kids are going.
Keeping normal speed because no children are visible. In most states the school limit applies when children are present anywhere near the road, not only in the crosswalk.
Signs that live in the same family, or get confused with this one.
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