She began her teaching career at the Rhode Island School for the Deaf in 1973, the same year when the United States Congress played a powerful role in changing the face of education for the deaf students with the Rehabilitation Act of 1973, and the ensuing Education for all Handicapped Children Act (PL 94-142). As a classroom teacher, she has experienced teaching all levels - deaf and hearing - from preschool through hig school, college, and adult education. The Education Act was the inspiration for her commitment to keenly onserve and document learning styles and personal capabilities, then to develop curriculum and awareness-training workshops in public and private schools and colleges, and church and community-based programs to facilitate personal and professional growth. Notably, she served on the Garrahy Commission which established the Department of Children, Youth and Their Families.
In addition to teaching ang traning, Clarkson is a prolific illustrator of language testing instruments and currently a local realtor, an avid supporter of the National Museum of Women in the Arts, NMWA, Washington, DC,.