Director- Tennessee Governor's School for Scientific Models and Data Analysis, East Tennessee State University, 2007-Present

Executive Director- Center of Excellence in Mathematics and Science Education, East Tennessee State University, 2006-Present 

Assistant/Associate/Professor of Science Education - East Tennessee State University, 1987- Present.  

Interim Chair, Department of Curriculum and Instruction, East Tennessee State University, Johnson City, TN (1996-1999). 

Kingsport City School System, Kingsport, Tennessee.  Supervisor of Science and Environmental Education, system wide science program.  Director of several external funded projects.  Primary responsibilities were built around curriculum development, in-service training, staff management, assignments/transfers/work load, school building and equipment, school-community relations, and professional growth.  1974-1987.

Tennessee State Department of Education, Nashville, Tennessee.  Career Ladder Evaluator for Principals and Supervisors.  Traveled from Mountain City to Memphis and visited more than 200 elementary, middle, and high school programs across the state.  1985-1986.

Kingsport City School System, Kingsport, Tennessee.  Dobyns-Bennett High School.  Teacher of biology and physical science.  1972-1974.

Chesapeake Public Schools, Chesapeake, Virginia.  Deep Creek High School.  Teacher of biology and senior science.  Served as interim science department chair.  Primary responsibilities centered around curriculum development, equipment and supplies, scheduling, professional growth, school wide science fair director.  1969-1972.

Chesapeake Public Schools, Chesapeake, Virginia.  Truitt Junior High School.  Teacher of science.  1968-1969.

Associate/Professor of Science Education - East Tennessee State University, 1987 - present.