The Council of State Science Supervisors (CSSS) is a professional organization composed of science education specialists who serve at the state, territorial, or the protectorate educational agency in the United States and U.S. Territories. CSSS is the only professional science organization whose members have direct accountability to the government agencies given the constitutional authority for education. Within their own jurisdictions, each of these supervisors plays a key role in directing effort at improving school science and to ensure excellence and equity in science education.

CSSS can offer state and national organizations a direct science education link to every school building in their state or territory. These science supervisors can provide information on the types of science programs their schools are using and how well each of the programs are working in their state. Most of the members serve on the state science teacher's organizational boards and are on a first name basis with their leaders. The Council members are proactive change agents in science for their state. Their responsibilities link the Council members by leadership and service to a broad constituency.