PS Statement of Purpose (with a limit of 500 words) GPA Applicants should have a cumulative undergraduate grade point average (GPA) comparable to at least a "B+" average or 3.30 out of a possible 4.00, and rank in the top quartile (25 percent) of their graduating class. Fee An application fee will be requested upon submission of your application: $60 for U.S. students and $100 for International students. RL Three letters of recommendation (ISU application system will use the email addresses you provide to send them instructions) Transcript Transcripts (upload a copy of official transcripts to the ISU application system)