Postgraduate programs at Oregon State University Cascades require international applicants to submit an online application along with the necessary fee, official English proficiency test results (TOEFL, IELTS, or Duolingo), transcripts from prior schools, and, depending on the program, possibly GRE results. The Oregon State University Graduate School Admission webpage and the OSU-Cascades information page include specific requirements, including the amount of the application fee for overseas students.