LCSW is an acronym for the Licensed Clinical Social Worker exam. This is a certification test administered by the Association of Social Work Boards to prospective social workers, who are looking to become licensed in their respective states. There are four levels of certification available, depending on one's degree - Bachelors, Masters, Advanced Generalist, and Clinical.
States often require successful completion of the LCSW test for employment as a clinical social worker. Prerequisites to taking the test may include being at least 21 years of age, having no serious criminal record, holding a degree in social work from an accredited college, as well as having some years of supervised experience in psychotherapy, diagnosis and treatment planning. A specific amount of client contact hours may be a part of this requirement. The exact terms and fees for licensure varies by state, so prospective candidates should check with their licensing board first for specifics.