calendar. La Salle Prep is a private, co-ed Roman Catholic, Brothers of the Christian Schools, college preparatory high school in Milwaukie, Oregon, and run independently of the Archdiocese of Portland.. La Salle Catholic College Preparatory, high school, Milwaukie, Oregon, La Salle Prep, Portland, Academy, private, best, makerspace, art, guitar, music, drama, AP, Advanced Placement, honors, calculus, Spanish, German, French, Falcon, Lasallian, Christian Brothers, Murdock, rigorous, top-rated, service, volunteer, Roman Catholic, Archdiocese of Portland