You generally cannot become a certified or licensed nursing assistant without completing some form of formal training or educational program, as state regulations strictly mandate approved instruction. Federal and state laws require aspiring CNAs to complete a state-approved training program encompassing both theoretical classroom learning and hands-on clinical practice before they are allowed to sit for the competency certification exam. Bypassing a formal educational program entirely is not permitted because the role involves direct patient care, medical safety protocols, and technical proficiencies that must be professionally taught and evaluated. However, the definition of "school" in this context is quite flexible; programs do not require a multi-year college degree. Instead, they can be completed in just 4 to 12 weeks through community colleges, vocational technical schools, specialized nursing academies, or on-the-job training programs provided directly by certain nursing homes and long-term care facilities that sponsor your education.