What is JHSPH OpenCourseWare? OCW makes JHSPH course materials used in the teaching of actual courses freely and openly available on the Web. You may share and adapt the materials on OCW under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license. Why is JHSPH doing this? JHSPH sees OCW as an important component of the School’s mission (Protecting Health, Saving Lives - Millions at a Time). OCW is true to JHSPH's values of excellence, innovation and leadership. JHSPH OCW contributes to the "shared intellectual commons" in academia, which fosters collaboration across JHSPH and among other scholars across disciplines and around the world. How does JHSPH OCW differ from JHSPH Online Courses? JHSPH Online Courses involve the active exchange of information between faculty and students, assessment opportunities, and verification of learning outcomes. Furthermore, academic credit is awarded for successful completion of JHSPH Online Courses. To explore JHSPH Online Courses, visit http://distance.jhsph.edu/. JHSPH OCW is not meant to replace degree-granting higher education or for-credit courses. Rather, the goal is to freely and openly provide the content that supports an education.