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1 302 77710151515 Linden StWilmington DE 19805 Be who you are and be that well. MissionLearn More Nativity Preparatory School of Wilmington is a tuitionfree Catholic middle school for boys. Guided by the example of Saint Francis de Sales it strives to educate students regardless of faith to maximize their God given potential. EducationLearn More From the Salesian perspective there is no greater ministry in the world than to shape the mind and heart of the young.