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In this short story, (I remember I read it a few years ago) a little girl was sent to live on Venus by her parents, where everyone has to live inside a building and there's only sun there for one hour every a certain amount of years (I think 7 or 12 years). The other children in the school at that settlement become jealous of her, and when the sun comes out - the number one thing she loves, the sun - they lock her in a closet and forget about her as they enjoy the sunshine. Then they remember after the sun has gone and let her out, and that's where the short story ends.
I don't remember who wrote it, but if anyone knows this story please help me identify it!