What happens to Margot while the teacher is out of the classroom?

Margot is considered an outcast in her class on the planet Venus, because she is the only student who genuinely remembers what the sun looks and feels like. Margot is also a shy, timid girl who longs to travel back to Earth, where she grew up. Unlike the other students, Margot was not born on Venus, is severely depressed, and does not participate in games or fun class activities, unless they involve learning or talking about the sun. Margot's parents also plan on returning to Earth because they believe that it is vital to their daughter's health. The other children in Margot's classroom resent her for her future opportunity to leave Venus and do not like her, because she is different. Bradbury writes,

And so, the children hated her for all these reasons of big and little consequence. They hated her pale snow face, her waiting silence, her thinness, and her possible future (2).

Unfortunately, one boy begins to yell at Margot on the one day that the sun briefly shines on the rainy planet for an hour, and the others join in. The children then proceed to shove Margot into a closet and lock her inside. The sun ends up coming out for an hour, and Margot misses out because she is locked in the closet.