- BLA, University of Georgia, 5-Year Professional Degree, 1971
- MRP, University of Massachusetts, with emphasis in Landscape Architecture, 1973
- Professor – University of Rhode Island, 2005 to present.
- President – Richard Sheridan Landscape Architecture, Inc.: Bow, NH, 1982 to present.
- Visiting Professor – Norwich University; Norwich, VT, 1999 to present.
- Visiting Professor – University of Rhode Island; Kingston, RI, 1991 to 1998.
- Landscape Design/Build Instructor (Sustainable and Permaculture) – Yestermorrow Design/Build School; Warren, VT, 1987 to present.
- Associate Professor and Assistant to Department Chairperson – Ball State University, Department of Landscape Architecture; Muncie, IN, 1980 to 1982.
- Assistant Professor and Acting Program Director – University of Arkansas, Landscape Architecture Program; Fayetteville, AR, 1977 to 1980.
- Landscape – New York State Dept. of Transportation; Poughkeepsie, NY, 1973 to 1977.
- Planning Consultant – Town Planner’s Office; West Springfield, MA, 1972 to 1973.
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