The M.S. (Plan I) degree program includes both coursework and research. It culminates in a written master's thesis describing the results of original research of publishable quality. Two to three years are usually needed to complete the required 18 credit hours of formal coursework (including at least 12 credit hours at the 500 level), pass the cumulative examinations comprising the Master's examination, complete the thesis research, and write and defend the thesis. Students who select this degree have found it appropriate if their career goals are, for example, teaching in a two- or four-year college or finding technical employment in the chemical industry.