Delegate, Maryland State House of Delegates, 1986-present

Maryland Labor Caucus, 2005-present

Maryland Bicycle and Pedestrian Caucus, 2004-present

Southern Regional Education Board, 1998-present

Member, Maryland Green Caucus, 1996-present

Maryland Educators Caucus, 2005-present

Member, Montgomery County Delegation

Member, National Conference of State Legislatures

Maryland Fire, Rescue, and Emergency Medical Services Caucus, 2003-present

Special Committee on Higher Education Affordability and Accessibility, 2003-2004

Montgomery County School Board Composition Task Force, 2000-2001

Task Force on the Privatization of the Washington Suburban Sanitary Commission, 1998-1999

Special Committee to Study Issues Related to Class-Size Reduction, 1998-1999

Special Joint Committee on Pensions, 1999

Special Committee on School Enrollment Management, 1996-1997

Governor's Commission on Black Males, 1990-1995

House Chair, Advisory Commission on Federal-State-Local Relations, 1993-1994

Chair, Governor's Commission on Disruptive Youth, 1993-1994

Spending Affordability Committee, 1991-1994

Member, Special Joint Committee on the Medical Assistance Program, 1988-1992

Joint Expenditure Study Group on Education and Human Resources, 1991, 1991

Co-Chair, Joint Study Group on Education and Local Government Revenues, 1991

Member, Metropolitan Washington Council of Governments, 1989-1990

Management and Budget Specialist, Montgomery County Public Schools

Experience, Aspen Hill Civic Association

Experience, Montgomery College Alumni Association

President, Montgomery County Education Association

Experience, Wheaton Citizens Advisory Board

Experience, Wheaton Woods Citizens Association