Local and state member CASA programs adhere to formal standards set by National CASA Association and are required to pass a quality assurance review, which is administered every four years. This self-assessment is a course of action taken by local programs to evaluate and improve their operations.  Staff teams work together to answer 400 questions and gather 58 supporting documents for submission to National CASA Association. Professionals outside the CASA network determine overall compliance by conducting an independent review of the standards self-assessment instrument and supporting documentation. Programs must address any compliance concerns within six months to maintain their certification.