2006, Article reviewer for HorTechnology , American Society of Horticultural Science (ASHS).

2004, Judge alternate for the Philadelphia Flower Show, Philadelphia , PA.

2004, Exhibitor in the mixed media art show at River Farm, The American Horticultural Society, Alexandria, VA. 

2002, Participant of the River Farm Design Charette (Master Plan), The American Horticultural Society, Alexandria , VA.

2000, Proposal reviewer for NAAEE presentations, interact sessions, and workshops.

2000, Judge in environmental science for the Ohio state ‘future city' competition.

1999-2000, Consulting designer for Weinland Park Community Garden , Columbus , OH .

1999, Designer and installation supervisor for the International Peace Garden at St. Thomas University, St. Paul, MN.; National Peace Corps Assoc. meeting, Aug. 12-15.

1998-Present, Volunteer for The Ohio State University Chadwick Arboretum; plant ambassadors trainer for 2000 and 2001 plant sales; auctions host 2000-present.

1997, Judge for the Maymont Flower Show, Richmond , VA.

1996-1997; 2004, Judge for the Washington Home and Garden Show, Washington , D.C.

1996-1997, Volunteer trainer for D.C. schools greenhouse renovations, Congressional Hunger Task Force and D.C. Coalition Against Hunger.

1996, Mentor for the Maryland Collaborative for Teacher Preparation.

1996, Judge for the Fairfax County (VA) schools science fair.

1990, Alternate, College of Agriculture , The Ohio State University Senate.

©2006MarkAMiller

2001-2002, Marketing Chair of the conference planning committee, Environmental Education Council of Ohio (EECO).

1999-Present, Member of the Friends of the Eastern Caribbean Affiliate, National Peace Corps Association.

1997-Present, Member of the North American Association of Environmental Education (NAAEE); Membership committee member 2005-Present.

1997-Present, Member of the American Horticultural Society's National Children & Youth Gardening Advisory Panel; Environmental education program coordinator, 2002 Symposium, San Francisco, CA., Aug. 1-4.

1997-2002, Member of the Botanical Garden and Arboretum Educators Association, OH.

1997-2000, Trustee of the Martha Walker Community Gardening Club, Columbus , OH .

1997-1999, Co-Chair of GradRoots (Natural Resources Graduate Student Council).

1995-Present, Member of the American Public Gardens Association (formerly American Association of Botanical Gardens and Arboreta).

1989-1990, Officer for the Agricultural Education Graduate Student Council.

1987-Present, Member of the National Peace Corps Association.

1987-1993, Certified vocational horticulture instructor, State of Ohio , Dept. of Education.

1979-1982, Officer of Pi Alpha Xi and member of Gamma Sigma Delta honorary scholastic fraternities.

2004, Recipient of the VA Dept. of Education “Creating Excellence Award.”

2001, Recipient of U.S. Dept. of Education Foreign Language and Area Studies (FLAS) Fellowship.  Declined.

1996, Selected as a Group Study Exchange member of Rotary International; traveled throughout the state of Karnataka , India , for 5 weeks.