Nursing has five distinct levels, each with different education requirements, responsibilities, and pay. They range from certified nursing assistants, who can start working in as little as four weeks, to doctoral-prepared nurses who spend a decade or more in training. Understanding these levels can help you figure out which path fits your goals, whether you’re just starting out or planning to advance.
Certified Nursing Assistant (CNA)
CNAs are the entry point into nursing. Their primary role is hands-on, daily patient care: helping with bathing, feeding, mobility, and monitoring vital signs. Most of their work centers on quality of life rather than medical decision-making. They work under the supervision of nurses in hospitals, nursing homes, and long-term care facilities.
CNA programs take between 4 and 12 weeks to complete and are offered at community colleges, vocational schools, and some hospitals. Clinical requirements are relatively light, ranging from 75 to 180 hours depending on the state. After finishing, you must pass a state competency exam to earn certification. Requirements vary by state, so there’s no single national standard for CNA training.
Licensed Practical Nurse (LPN)
One step up from a CNA, licensed practical nurses (called licensed vocational nurses in Texas and California) provide more direct medical care. LPNs can administer medications, change wound dressings, monitor patient conditions, collect samples, and provide basic bedside education to patients and families. They work in hospitals, clinics, hospices, and physician offices.
LPN programs typically take about one year and include coursework in biology, pharmacology, and core nursing practices. Clinical hour requirements are significantly higher than for CNAs, generally between 500 and 750 hours of supervised experience. After completing a program, you take the NCLEX-PN, a computerized adaptive exam with 85 to 205 questions and a five-hour time limit.
The key limitation at this level is scope of practice. LPNs cannot perform initial comprehensive assessments, formulate nursing diagnoses, or develop care plans independently. They contribute to all of these processes but work in collaboration with and under the direction of registered nurses. The median annual wage for LPNs is $62,340.
Registered Nurse (RN)
Registered nurses are the backbone of most healthcare settings and carry a much broader scope of practice than LPNs. RNs perform comprehensive patient assessments, formulate nursing diagnoses, create and modify care plans, and evaluate whether treatments are working. They also direct LPN practice and delegate tasks to other staff. In short, RNs own the nursing process from start to finish.
Two Paths to Becoming an RN
You can become an RN with either an Associate Degree in Nursing (ADN) or a Bachelor of Science in Nursing (BSN). Both qualify you to take the NCLEX-RN, which has 75 to 265 questions and a six-hour time limit. Both exams use a computerized adaptive format, meaning the difficulty adjusts based on how you answer previous questions.
An ADN is a two-year program, typically offered at community colleges, with some accelerated versions finishing in 18 months. It covers the core training needed to work as an RN. A BSN is a four-year program at a college or university and provides broader, more comprehensive training and clinical experience. If you already hold an ADN or a bachelor’s degree in another field, you can complete an RN-to-BSN bridge program in less time.
The practical difference matters more than you might expect. Many healthcare facilities now prefer or require BSN-prepared nurses during hiring. A BSN is also required for admission to any graduate nursing program, so if you think you might eventually want to become a nurse practitioner or clinical specialist, the bachelor’s route saves time in the long run. The median annual wage for RNs is $93,600, with projected job growth of 5% over the next decade.
Advanced Practice Registered Nurse (APRN)
APRNs hold at minimum a master’s degree and are licensed to practice at a level that overlaps significantly with physicians. They can diagnose conditions, order tests, prescribe medications, and manage patient care independently in many states. There are four distinct APRN roles, each with a different clinical focus.
Nurse Practitioner (NP) is the most common APRN role. NPs provide primary and specialty care, performing physical exams, diagnosing illnesses, and managing chronic conditions. They can specialize in one of several population areas: family/individual across the lifespan, adult-gerontology, pediatrics, women’s health, neonatal care, or psychiatric/mental health.
Certified Registered Nurse Anesthetist (CRNA) administers anesthesia for surgeries and other medical procedures. This is one of the highest-paying roles in nursing.
Certified Nurse Midwife (CNM) provides gynecological and reproductive care, manages pregnancies, and delivers babies. Many CNMs also provide primary care for women throughout their lives.
Clinical Nurse Specialist (CNS) focuses on improving care quality within a specific patient population or clinical setting. CNSs often work on system-level problems, developing protocols and training other nurses, in addition to providing direct patient care.
All four roles require certification in both the specific role and a population focus area. The median annual wage across nurse anesthetists, nurse midwives, and nurse practitioners is $132,050.
Doctoral-Level Nurses
The highest level of nursing education comes in two forms, and they serve very different purposes.
A Doctor of Nursing Practice (DNP) is a clinical doctorate. DNP-prepared nurses typically continue working in direct patient care, most commonly as nurse practitioners. They tend to be younger than their PhD counterparts and hold the same advanced practice titles as master’s-prepared APRNs, but with deeper training in evidence-based practice, leadership, and healthcare systems improvement.
A PhD in Nursing is a research doctorate. PhD-prepared nurses are more likely to move into administrative, leadership, or academic positions rather than staying in bedside or clinic roles. They conduct original research, teach in nursing programs, and shape healthcare policy. On average, PhD nurses are about 10 years older than DNP nurses, reflecting the different career stage at which many pursue this path.
Both doctorates take three to four years beyond a master’s degree, though some programs offer a BSN-to-DNP or BSN-to-PhD track that combines graduate and doctoral work.
How the Levels Compare at a Glance
- CNA: 4 to 12 weeks of training, state certification exam, provides daily patient care under nurse supervision
- LPN: About 1 year of training, NCLEX-PN exam, provides basic medical care under RN direction, median pay $62,340
- RN: 2 to 4 years of training (ADN or BSN), NCLEX-RN exam, leads the nursing care process, median pay $93,600
- APRN: Master’s degree minimum, national certification in a specialty, can diagnose and prescribe, median pay $132,050
- Doctoral Nurse: DNP for advanced clinical practice, PhD for research and academic leadership
Each level builds on the one before it, so starting as a CNA or LPN doesn’t lock you in. Many nurses begin at an entry level, gain experience, and return to school to move up. The path isn’t always linear, and bridge programs exist at nearly every transition point to help working nurses advance without starting over.