Admission to the graduate program in Systems Engineering is limited to applicants with a BS degree in engineering and certain physical sciences, such as mathematics or computer science. Students must also have a superior academic record. Applicants are required to submit the Graduate Record Examination (GRE) scores for admission evaluation. International applicants are also required to take the Test of English as a Foreign Language (TOEFL) exam. A candidate for the PhD in Systems Engineering must complete the equivalent of at least three years of full time work beyond the Bachelor's degree. The content of all PhD programs are individually structured by the student in consultation with and approved by the student's advisory committee. All requirements for the degree must normally be completed within an eight year period. At appropriate points in their program, PhD students must pass both a Qualifying Exam and Comprehensive Exam. Off-campus students are expected to complete all requirements listed in the Missouri S&T Graduate Catalog under the section entitled Doctor of Philosophy Degree and follow all procedures listed under the Procedures for PhD Candidates.