Marguerite Fleming was the director of radio station KSLH in St. Louis, Missouri. Fleming served as the chairman of the Program Planning Subcommittee of the Radio Network School Committee for the National Association of Educational Broadcasters. She also served as the vice-chairman of the overall Radio Network School Committee. In 1954, Fleming organized the In-School Radio Program Writers' Seminar of the NAEB, which brought together broadcasters who wrote radio programs specifically for school use. By this time, Fleming was on the NAEB's Board of Directors and the chairman of the In-School Program Committee.