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Education and Credentials
B.S. in Accounting at Southwest State University
Mary R. Duncan, CPA, CGMA, has been an Adjunct Accounting Instructor at Western Dakota Tech since 2018. She has a Bachelor’s degree in Accounting from Southwest Minnesota State University and has been a Certified Public Accountant for more than 33 years. Duncan worked in public accounting for 15 years, where she did auditing, tax preparation and financial statements. She was also the CFO of a non-profit community mental health center for 10 years, prior to becoming the Accounting Manager for the Rapid City Area School District - a position she has been in for the last 12 years. Duncan is a member of the South Dakota CPA Society and the American Institute of Certified Public Accountants.