St. John's Preparatory School can refer to:
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St. John's Preparatory School (Harare) an independent preparatory school in Zimbabwe.
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St. John's Preparatory School (Massachusetts)
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Saint John's Preparatory School (Minnesota)
Saint John's Preparatory School (SJP) is a Catholic co-educational, day and boarding college preparatory school located in Collegeville, Minnesota. Founded in 1857, it is located in the Roman Catholic Diocese of Saint Cloud, Diocese of Saint Clo ...
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St. John's Preparatory School (Queens)
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