She previously worked with the Office of Chief Counsel for the Federal Emergency Management Agency (FEMA), with the Department of Homeland Security. Before her time at FEMA, Sizer served as education policy advisor to former Louisiana Governor Kathleen Babineaux Blanco. Prior to her tenure as an education policy advisor, Sizer served as an assistant attorney general with the Louisiana Department of Justice. Sizer received her juris doctorate from the Southern University Law Center and her bachelor’s degree in political science from Southern University and A&M College. Sizer is active in many professional and community organizations. She is a member of the Louisiana State Bar Association, the Baton Rouge Bar Association, and the Louis A. Martinet Legal Society of Greater Baton Rouge.