Distinctive Human Resources, Inc. (DHR) has over 25 years of experience in certification preparation. David Siler, a leader in Human Resources, designed the DHR program to ensure adult learners have multiple venues for learning – textbook, audio files, videos, lecture, flashcards and quizzes….lots of quizzes. We start by making sure every employee at DHR has at least one certification, and most have multiple certifications. Our mission is to provide you with the best possible program to meet your certification needs. Are you ready to take control of your future? Are you ready to go for your aPHR, PHR, SPHR, GPHR? Then let DHR help you get there. Put your future to the test. Get certified with DHR, Inc.