Graduate Prerequisites: M.S. and Ph.D. students in health services research approved for disse rtation or thesis work by program director - M.S. and Ph.D. students in Health Services Research who have completed all academic course requirements, must register for Continuing Study every Fall and Spring semester until they have successfully defended their thesis or dissertation and graduated from SPH. Students are charged the equivalent of two credits of tuition, student health insurance, and all relevant fees, and are certified as full time students.