Marron has been chair of Central Michigan's journalism department since 2002. In that time she led two departmental reaccreditations; strengthened local, statewide and national media connections; fostered partnerships with local companies, alumni and academic organizations in support of her unit; raised funds for program initiatives, including a grant to attract more minority students into journalism; pioneered a program of visiting professionals and international exchange partnerships; and worked with curricular and faculty committees to develop a new master's program.
Her teaching areas are in journalism, media law and ethics, and her research spans journalism pedagogy, investigative journalism, health and aging issues in the media. She is the editor of Journalism and Mass Communication Educator, one of the three journals published by Sage for the Association for Education in Journalism and Mass Communication. She is a former president of the Association of Schools of Journalism and Mass Communication.
She holds a B.A. and postgraduate diploma from University College Dublin, Ireland; an M.A. in journalism from The Ohio State University, where she was a Rotary International fellow representing Ireland; and a Ph.D. in journalism and mass communications from Ohio University.
Marron has worked as a journalist, editor and public relations professional in Ireland and the United States. She also has held faculty positions at Ohio State and Texas State University-San Marcos. She was on the initial planning team for the College of Communication and Media Sciences at Zayed University, Dubai, and Abu Dhabi, United Arab Emirates.