Nursing degrees follow a clear ladder, starting with a certificate-level credential and climbing through four distinct college degrees. The full order, from entry level to the highest, is: Certified Nursing Assistant (CNA), Licensed Practical Nurse (LPN), Associate Degree in Nursing (ADN), Bachelor of Science in Nursing (BSN), Master of Science in Nursing (MSN), and Doctorate (DNP or PhD). Each step expands what you’re allowed to do clinically, opens new roles, and increases earning potential.
Certified Nursing Assistant (CNA)
A CNA credential is the fastest way into healthcare. Most programs run four to twelve weeks and combine classroom instruction with hands-on clinical training. After completing the program, you take a state competency exam rather than a national licensing test. CNAs work under the supervision of nurses, helping patients with daily activities like bathing, dressing, eating, and moving around. It’s not a college degree, but it gives you direct patient care experience that counts if you decide to continue up the ladder.
Licensed Practical Nurse (LPN)
The LPN is the next step, requiring roughly one year of education at a community college, technical school, or hospital-based program. After graduation, you must pass the NCLEX-PN, a national licensing exam. LPNs have a broader clinical role than CNAs: they can take vital signs, administer certain medications, dress wounds, and collect patient data. However, LPNs work at what’s legally defined as a “dependent” level, meaning they need RN supervision for most of their responsibilities. They don’t independently create care plans, manage other nursing staff, or make the kind of clinical judgments reserved for registered nurses.
Associate Degree in Nursing (ADN)
An ADN is typically a two-year program offered at community colleges, and it’s one of two main pathways to becoming a registered nurse. After completing the degree, you sit for the NCLEX-RN, the same licensing exam that BSN graduates take. Passing it makes you a full RN, legally authorized to practice at an independent level: assessing patients, developing care plans, administering medications, delegating tasks to LPNs and CNAs, and making clinical decisions.
The ADN appeals to people who want to start working as an RN quickly and at lower tuition costs. Many nurses use it as a stepping stone, entering the workforce first and then completing a BSN later through a bridge program.
Bachelor of Science in Nursing (BSN)
A BSN is a four-year university degree that covers everything in an ADN program plus additional coursework in research, leadership, public health, and community nursing. Both ADN and BSN graduates hold the same RN license, but the difference shows up in hiring and pay. The median annual salary for BSN-prepared nurses runs about $12,000 higher per year than for RNs overall. Many hospitals, especially those pursuing or maintaining magnet status, prefer or require a BSN.
If you already hold an ADN, RN-to-BSN bridge programs let you finish the bachelor’s degree in as little as two semesters. Most of these programs are available online, designed for nurses who are already working full time.
Master of Science in Nursing (MSN)
An MSN typically takes one and a half to two years beyond the BSN and opens the door to advanced practice, leadership, and education roles. This is the degree that qualifies you for the four primary Advanced Practice Registered Nurse (APRN) designations:
- Nurse Practitioner (NP): Diagnoses and treats patients, often serving as a primary care provider. In many states, NPs practice independently.
- Certified Registered Nurse Anesthetist (CRNA): Administers and monitors anesthesia during surgery. CRNAs consistently rank among the highest-paid nursing professionals.
- Certified Nurse Midwife (CNM): Provides care during pregnancy, labor, delivery, and the postnatal period. Depending on the state, CNMs work in hospitals, birthing centers, or OB/GYN clinics.
- Clinical Nurse Specialist (CNS): Serves as a clinical expert in a specialty area like acute care or geriatrics, often combining direct patient care with staff education and research.
Beyond APRN roles, an MSN also qualifies you for positions in nursing education, hospital administration, informatics, and quality improvement.
Doctorate: DNP and PhD
A doctorate is the highest level of nursing education, and it comes in two forms with very different purposes.
The Doctor of Nursing Practice (DNP) is a practice-focused degree. It prepares nurses for top-level clinical leadership, health system administration, and policy work. DNP students learn to translate existing research into real-world improvements in patient care. The program culminates in a scholarly project, often tied to quality improvement or evidence-based practice at a healthcare organization. Increasingly, a DNP is becoming the expected credential for APRNs, particularly CRNAs.
The PhD in Nursing is a research degree. It trains nurses to design and lead original studies, develop nursing theory, publish in academic journals, and teach at the university level. PhD students complete a traditional dissertation defending original research. Unlike the DNP, a PhD program includes a mentored teaching experience and has no clinical hour requirements.
Both degrees carry the title “doctor,” but they lead to different careers. If you want to run a clinical program or shape healthcare delivery, the DNP is the typical path. If you want to conduct research and teach at a university, the PhD is the standard choice.
How the Licensing Exams Fit In
Two national exams gate the profession. The NCLEX-PN is for graduates of accredited practical nursing programs and grants the LPN license. The NCLEX-RN is for graduates of accredited ADN or BSN programs and grants the RN license. CNAs take a state-level competency exam instead. APRNs must hold an active RN license and then earn national certification in their specialty after completing an MSN or doctoral program.
One important detail: an ADN-prepared RN and a BSN-prepared RN hold the same license and pass the same exam. The BSN doesn’t grant a different license. It expands your knowledge base, your competitiveness for jobs, and your eligibility for graduate school.
Choosing Your Starting Point
The nursing education ladder is designed so you don’t have to commit to the full climb on day one. Many nurses start with a CNA certificate to confirm they want to work in healthcare, then pursue an LPN or ADN. Others enter a four-year BSN program directly out of high school. Bridge programs exist at nearly every transition point: LPN-to-RN, ADN-to-BSN, BSN-to-MSN, and MSN-to-DNP.
Your decision depends on how quickly you want to start working, how much you can invest in tuition, and where you ultimately want your career to go. Each degree level qualifies you for a meaningfully different scope of practice, so the progression isn’t just academic. It changes what you’re legally allowed to do at the bedside, in the clinic, and in the system.