When Sabrina inadvertently complains about her Quizmaster's teaching methods to a woman who turns out to be his boss, the Witches' Council rules that he be reassigned to a new pupil, the obnoxious Ralph. Sabrina, who is in the midst of cramming for her hardest magic test to date, finds herself being taught at home by her less-than-scholarly Aunt Hilda, while Zelda substitutes for her chemistry teacher at school.

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