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When Ms. Beadle is injured, Caroline Ingalls takes over as a substitute in Walnut Grove. During that time an uneducated youth named Abel enrolls. Abel is relentlessly teased because he is illiterate. The children teased him calling him Dumb Abel Eventually, the harassment and Mrs. Oleson's meddling become too much, and Caroline orders the school closed. Caroline then takes it upon herself to teach Abel to read.