The School of International Service (SIS) at American University offers a comprehensive liberal arts program for undergraduate students, professional training in international affairs for Master's students, and a multidisciplinary program for doctoral students. The programs are based on an interdisciplinary curriculum that encourages students to explore international affairs with distinguished faculty members and policy practitioners. Housed in a spectacular LEED-gold certified building, the school offers exceptional opportunities. The links between the school and its Washington, DC environment nourish the academic and professional growth of its students. 15 credit hours of approved coursework with at least 9 credit hours at or above the 600-level with grades of C or better. Grades of C- or D in certificate program courses are not accepted toward the fulfillment of certificate requirements, although these grades will be included in the calculation of the GPA. Students must have a minimum 3.00 cumulative GPA in certificate courses in order to be awarded a certificate. Students in certificate programs must take a minimum of 6 credit hours during each 12-month period and complete the certificate in four years. International students must enroll in 9 credit hours each semester (except for summer). A maximum of 3 credit hours earned at an accredited college or university may be applied toward the certificate as transfer credit