Nursing has six main levels, starting with Certified Nursing Assistant (CNA) and climbing through Licensed Practical Nurse (LPN), Registered Nurse (RN) with either an associate or bachelor’s degree, Advanced Practice Registered Nurse (APRN), and finally doctoral-prepared nurses. Each step up brings more education, broader clinical authority, and higher pay. Here’s what each level looks like in practice.
Certified Nursing Assistant (CNA)
CNAs are the foundation of hands-on patient care. They help with daily activities like bathing, feeding, and mobility, and they often serve as the first point of contact between patients and the rest of the medical team. You’ll find CNAs in hospitals, long-term care facilities, and home health settings.
Training is the shortest of any nursing role: four to twelve weeks of combined classroom instruction and supervised clinical experience. After completing a program, you must pass a state certification exam before you can work. Because the barrier to entry is low, many people use this role as a stepping stone into higher nursing levels while gaining real patient care experience.
Licensed Practical Nurse (LPN)
One step above a CNA, Licensed Practical Nurses handle more clinical tasks but still work under the supervision of registered nurses or physicians. LPNs monitor vital signs, administer medications, assist with medical procedures, and communicate directly with patients and families. The scope is broader than a CNA’s but stops short of developing care plans or performing complex procedures independently.
LPN programs typically take 12 to 18 months and combine classroom learning with clinical rotations. Graduates must pass the NCLEX-PN, a national licensing exam focused on care coordination, data collection, basic comfort measures, and pharmacological therapies. The exam runs 85 to 205 questions over five hours. The median annual wage for LPNs was $62,340 in May 2024, according to the Bureau of Labor Statistics.
Registered Nurse With an Associate Degree (ADN)
Becoming a registered nurse is where the career opens up significantly. RNs can handle complex medical procedures, develop patient care plans, administer a wider range of medications, and perform diagnostic tests. An Associate Degree in Nursing (ADN) is the fastest path to RN licensure, typically completed in two years at a community college, with some accelerated programs finishing in 18 months.
Both ADN and BSN graduates take the same licensing exam, the NCLEX-RN, and hold the same RN title. The NCLEX-RN is more demanding than the practical nurse version: 75 to 265 questions over six hours, with heavier emphasis on assessment, management of care, and therapies like IV administration and blood transfusions. An ADN gives you the core clinical training to start working, but it does limit where you can work, since many hospitals now prefer or require a bachelor’s degree.
Registered Nurse With a Bachelor’s Degree (BSN)
A Bachelor of Science in Nursing is a four-year undergraduate degree that covers everything in an ADN program plus coursework in public health, nursing ethics, pathophysiology, and microbiology. The clinical training is broader and more comprehensive. Day to day, a BSN-prepared nurse performs the same bedside tasks as an ADN-prepared nurse, but the degree opens doors that an associate degree often cannot.
Many healthcare facilities now hire only BSN candidates, and the degree is a prerequisite for graduate school. If you plan to move into leadership, education, or advanced practice, starting with a BSN saves time. RNs who already hold an ADN can complete bridge programs (RN-to-BSN) that typically take one to two years. The median annual wage for registered nurses, regardless of degree type, was $93,600 in May 2024.
Advanced Practice Registered Nurse (APRN)
APRNs sit at the top of clinical nursing practice. They hold at least a master’s degree and have the authority to diagnose conditions, prescribe medications, and in many states run their own practices independently. The APRN category includes four distinct roles, each with its own specialty focus.
Nurse Practitioner (NP)
Nurse practitioners provide care that in many cases parallels what a primary care physician does. They can prescribe antibiotics, narcotics, and other medications in all 50 states. In just under half of states, NPs have full practice authority and can operate their own clinics. Specializations include family practice (caring for patients across all ages), psychiatric mental health (providing psychiatric assessments, diagnoses, and medication management), and women’s health (managing fertility, contraception, and gynecological conditions).
Clinical Nurse Specialist (CNS)
Clinical nurse specialists focus on improving care within a specific patient population or healthcare setting. They blend direct patient care with system-level work like developing evidence-based protocols and mentoring other nurses.
Certified Nurse Midwife (CNM)
Nurse midwives manage pregnancy, labor, delivery, and postpartum care. They also provide general gynecological and reproductive health services.
Certified Registered Nurse Anesthetist (CRNA)
CRNAs administer anesthesia for surgeries and other medical procedures. This is the most time-intensive APRN path, requiring a minimum of eight to ten years of combined education and training. It also tends to be the highest-paid nursing role.
The overall timeline to become any type of APRN is roughly six to ten years from the start of your education. The median annual wage for nurse practitioners, nurse midwives, and nurse anesthetists was $132,050 in May 2024.
Doctoral-Level Nursing (DNP and PhD)
The highest academic credentials in nursing are the Doctor of Nursing Practice (DNP) and the PhD in Nursing. Both are terminal degrees, meaning there’s no higher degree to earn in the field, but they serve very different purposes.
The DNP is a practice doctorate. It prepares nurses for leadership and administration in healthcare settings. DNP students learn to translate research into real-world practice improvements and complete a scholarly project focused on quality improvement, evidence-based practice, or health policy. Graduates typically work as administrators, senior nurse practitioners, or healthcare executives.
The PhD in Nursing is a research doctorate. It trains nurses to conduct original scientific research, develop nursing theory, and publish scholarly work. PhD graduates become nurse scientists who lead research teams or hold academic positions at universities. Unlike the DNP, a PhD program includes mentored teaching experience and culminates in a traditional dissertation.
A director of nursing or other high-level hospital administrator may need fifteen or more years of combined education and experience to reach that position. These doctoral roles represent the ceiling of nursing career advancement, whether your interest is in shaping patient care on the ground or generating the research that drives the entire profession forward.
Quick Comparison by Education and Pay
- CNA: 4 to 12 weeks of training, state certification exam
- LPN: 12 to 18 months, NCLEX-PN license, $62,340 median salary
- RN (ADN): 2 years, NCLEX-RN license, $93,600 median salary
- RN (BSN): 4 years, NCLEX-RN license, $93,600 median salary
- APRN: 6 to 10 years total, master’s or doctoral degree, $132,050 median salary
- DNP or PhD: Varies, typically the longest path, highest leadership and research positions