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We are now enrolling for our PE Chemical and PE Environmental Prep Courses. What makes PPI courses difference? We guide you every step of the way—from the second you enroll until you pass your exam. We present a unique mix of lectures, problem solving demonstrations, exam strategy sessions, and office hours. We assign homework from our #1 reference manuals and practice materials to effectively reinforce concepts. We "over-prepare" you, so that come exam day, you'll solve problems with confidence. We strategically schedule our Live Online courses over a spa