A licensed nurse is any nurse who has completed an approved education program and passed a national licensing exam, earning legal authorization from a state board of nursing to provide patient care. In the United States, this term covers three main levels: Licensed Practical Nurses (LPNs), Registered Nurses (RNs), and Advanced Practice Registered Nurses (APRNs). Together, these professionals make up the largest healthcare workforce in the country, with RNs alone numbering an estimated 4.3 million actively licensed individuals.
Types of Licensed Nurses
The licensing system creates a clear hierarchy based on education, exam requirements, and what each nurse is legally permitted to do.
Licensed Practical Nurses (LPNs) provide basic, hands-on patient care. They monitor vital signs, update health records, administer treatments, and assist RNs or physicians with day-to-day clinical tasks. In California and Texas, this same role goes by Licensed Vocational Nurse (LVN). Becoming an LPN requires a high school diploma followed by completion of an accredited practical nursing certificate program, which typically takes about one year. Candidates then pass the NCLEX-PN exam.
Registered Nurses (RNs) have a broader role. They monitor and treat patients, develop care plans, educate patients and families, supervise LPNs, and make independent clinical judgments. The path to becoming an RN involves either a two-year associate degree in nursing (ADN) or a four-year bachelor of science in nursing (BSN), followed by passing the NCLEX-RN exam.
Advanced Practice Registered Nurses (APRNs) hold a master’s or post-master’s degree and specialize in one of four roles: Certified Nurse Practitioner, Certified Registered Nurse Anesthetist, Certified Nurse Midwife, or Clinical Nurse Specialist. APRNs pass additional national certification exams and, depending on the state, can diagnose conditions, prescribe medications, and practice independently without physician oversight.
What “Licensed” Actually Means
The word “licensed” is the legal distinction that separates a nurse from someone with nursing education but no legal authority to practice. In every U.S. state and territory, a nurse must be authorized to practice by a state board of nursing (BON). That board sets the rules for education requirements, exam eligibility, and ongoing practice standards within its jurisdiction.
Licensure is not optional or honorary. Practicing nursing without a current, valid license is illegal. The board of nursing also handles disciplinary matters: receiving complaints, conducting investigations, holding hearings, and taking action that can include suspending or revoking a nurse’s license. This regulatory structure exists to protect patients.
How Scope of Practice Differs by License
One of the most important things a nursing license determines is scope of practice, meaning what a nurse can and cannot legally do. These boundaries vary by license level and, to some degree, by state.
RNs are responsible for performing comprehensive patient assessments, interpreting clinical data, formulating nursing diagnoses, and creating care plans. They also direct LPN practice and delegate tasks to other staff. LPNs collect patient data and recognize changes in a patient’s condition, but they cannot independently perform a comprehensive initial assessment, interpret clinical data on their own, or develop a nursing care plan from scratch. Instead, LPNs contribute to and carry out the care plan an RN has established.
In practical terms, this means an RN might evaluate a new patient, identify the key health problems, set priorities, and outline the interventions needed. The LPN would then carry out specific parts of that plan, such as administering medications, providing wound care, or educating patients on basic self-care, while reporting observations back to the RN. Both are licensed professionals, but the RN carries broader clinical accountability.
Keeping a License Active
A nursing license is not permanent. It must be renewed on a regular cycle, and nurses must complete continuing education to stay current. Requirements vary by state, but the general structure is similar everywhere.
Florida offers a typical example. RNs there renew on a biennial (two-year) schedule and must complete at least 24 hours of continuing education each cycle. These hours include general nursing topics, prevention of medical errors, state laws and rules, recognizing impairment in the workplace, and human trafficking awareness. Some topics, like domestic violence training, are required every third renewal period. All continuing education courses must be approved by recognized accrediting bodies, and nurses track their completion through a state verification system.
Nurses who are newly licensed by examination get a partial exemption for their first renewal, needing only the mandatory topic-specific courses rather than the full 24 general hours.
Practicing Across State Lines
Nursing licenses are issued by individual states, which historically meant a nurse needed a separate license for each state where they wanted to work. The Nurse Licensure Compact (NLC) changed that. Currently, 43 states have enacted the NLC, allowing nurses who hold a compact license issued in their home state to practice in any other compact state without applying for an additional license. This is especially relevant for nurses who work near state borders, travel nurses, and those providing telehealth services to patients in other states.
Licensure for Nurses Educated Outside the U.S.
Nurses who completed their education in another country follow a separate pathway. The first step is prescreening through the Commission on Graduates of Foreign Nursing Schools (CGFNS), which reviews the nurse’s education credentials, verifies licensure in their home country, tests English language proficiency, and administers a predictor exam gauging readiness for the U.S. licensing exam. After clearing that hurdle, the nurse must meet the specific requirements of the state where they intend to practice and pass the NCLEX, just like a domestically trained nurse. A small number of state boards will directly endorse foreign-educated nurses or accept Canadian nursing exams, but these policies vary and change over time.
The Workforce Outlook
Nursing is facing a significant supply gap. If current workforce patterns hold steady, the demand for RNs is projected to exceed supply by 9% in 2036, translating to a shortage of roughly 338,000 full-time equivalent registered nurses. This shortfall is driven by an aging population requiring more care, a wave of retirements among experienced nurses, and limited capacity in nursing education programs. For anyone considering the profession, the job market is expected to remain strong for the foreseeable future across all license levels.