Nursing is a healthcare profession focused on protecting, promoting, and improving health across all ages. It combines scientific knowledge with hands-on patient care, spanning everything from checking vital signs and administering medications to diagnosing illnesses and managing chronic disease. With a median annual salary of $93,600 for registered nurses in the U.S. as of May 2024, nursing is also one of the most accessible paths into a well-paying healthcare career.
What Nurses Actually Do
Nursing is often described as both an art and a science. The science side involves rigorous clinical training: performing physical exams, interpreting test results, coordinating treatments, and administering medications. The art side is harder to quantify. Nurses integrate objective data with a patient’s lived experience, reading not just lab numbers but body language, emotional state, and context to make critical decisions about care.
What a nurse does on any given day depends on their level of practice. Licensed practical nurses (LPNs) handle foundational tasks: checking vital signs, changing wound dressings, monitoring whether a patient’s condition is improving or deteriorating, and making sure patients are comfortable, fed, and hydrated. Registered nurses (RNs) take on a broader scope, performing health assessments, educating patients, coordinating care across multiple providers, and making clinical judgments that directly shape treatment. Advanced practice registered nurses (APRNs) operate at the top of the nursing ladder. They diagnose illnesses, prescribe treatments, provide primary care, and manage complex chronic conditions, often functioning as a patient’s main healthcare provider.
Levels of Nursing Education
One reason nursing attracts such a wide range of people is that there are multiple entry points into the profession, each with different time commitments.
To become an LPN, you need a high school diploma or equivalent and roughly one year of training at a hospital program, community college, or technical school. After completing the program, you take the NCLEX-PN licensing exam. Some programs require prerequisite courses in math and science, but the barrier to entry is relatively low compared to other healthcare roles.
Registered nurses have three educational routes. A diploma program, typically offered by hospitals or vocational schools, takes about two years but doesn’t result in a college degree. An associate degree in nursing (ADN) also takes two to three years, usually at a community college, and produces an entry-level college credential. A bachelor of science in nursing (BSN) is a four-year university degree and increasingly the preferred credential for hospital employers. Regardless of which path you choose, all RN candidates must pass the NCLEX-RN exam.
Advanced practice roles require graduate education. A master of science in nursing (MSN) typically takes one and a half to two years beyond a bachelor’s degree and qualifies you for roles as a nurse practitioner, clinical nurse specialist, or nurse leader. A doctorate, either a PhD focused on research or a doctor of nursing practice (DNP) focused on clinical expertise, represents the highest level of nursing education.
Getting Licensed
Every nurse in the U.S. must hold a state license to practice. The process starts with graduating from an approved nursing program and then passing the appropriate NCLEX exam. You’ll also need to submit to state and federal fingerprint-based criminal background checks, hold a valid Social Security number, and have no felony convictions or nursing-related misdemeanor convictions.
Many states participate in a Nurse Licensure Compact, which allows nurses to practice across state lines with a single multistate license. Applications go through your home state’s board of nursing. Nurses who graduated from international programs must verify their credentials through an independent review agency and, if their program wasn’t taught in English, pass an English proficiency exam.
Where Nurses Work
Hospitals are the most visible workplace for nurses, but the profession extends far beyond bedside care. Nurses work in schools, public health departments, corporate wellness programs, telehealth platforms, home health agencies, and military settings. Public health nurses focus on entire communities rather than individual patients, implementing health programs and educating populations about disease prevention.
A growing number of nurses never touch a stethoscope in their daily work. Nurse data analysts combine clinical knowledge with data science to improve healthcare operations. Legal nurse consultants review medical cases for law firms. Nurse informaticists design and manage the digital systems that hospitals run on. Telehealth nurses provide care remotely, helping patients access advice without unnecessary emergency room visits. Academic nurse writers produce textbooks, journal articles, and continuing education materials. The common thread is that nursing knowledge translates into dozens of career paths, many of which offer remote work and flexible schedules.
Specialties and Certifications
Nurses who want to deepen their expertise in a particular area can pursue board certification. The American Nurses Credentialing Center alone offers certifications in fields including psychiatric-mental health, cardiac-vascular care, pediatrics, pain management, ambulatory care, medical-surgical nursing, gerontology, and informatics. Each specialty requires meeting specific eligibility criteria and passing a certification exam.
At the nurse practitioner level, specializations include family practice, adult-gerontology acute care, adult-gerontology primary care, and psychiatric-mental health care across the lifespan. These credentials allow APRNs to practice independently or semi-independently in their specialty area, depending on state regulations. Certification isn’t just a resume booster; in most states, it’s a legal requirement for advanced practice roles.
Why Nursing Staffing Matters
The number of nurses in a hospital or care facility has a direct, measurable effect on whether patients survive and recover. Multiple large-scale studies have shown that as the number of patients per nurse increases, so does the risk of complications and death. Facilities with better nurse staffing see fewer pressure ulcers, fewer urinary tract infections, fewer falls, shorter hospital stays, and lower readmission rates. One study found that hospitals with more highly educated nurses had lower surgical mortality rates across a range of procedures.
Overwork takes a toll on care quality in specific, trackable ways. Medication errors are three times more likely when a nurse works shifts longer than 12.5 hours on more than two consecutive days. When nurses are stretched too thin, essential tasks get skipped: turning patients to prevent bedsores, responding promptly to changes in condition, double-checking medications. These missed care episodes have been linked not only to worse patient outcomes but also to higher job dissatisfaction and absenteeism among nurses themselves, creating a cycle that’s hard to break.
The Ethics That Guide the Profession
Nursing operates under a formal code of ethics that shapes everything from bedside interactions to health policy. The core principles start with compassion and respect for every person’s inherent dignity, regardless of background. A nurse’s primary commitment is always to the person receiving care, whether that’s an individual patient, a family, or an entire community.
Beyond individual care, the code calls on nurses to advocate for patients’ rights and safety, maintain accountability for their own clinical decisions, and work to improve the environments where care happens. Nurses are also expected to advance social justice, work to eliminate health inequities, and contribute to global health. The profession views ethical practice not as a set of abstract ideals but as daily obligations that every nurse carries, from the LPN checking vital signs to the DNP shaping hospital policy.
Salary and Job Outlook
Registered nurses earned a median wage of $93,600 per year, or about $45.00 per hour, as of May 2024 according to the Bureau of Labor Statistics. Compensation varies significantly by specialty, location, and experience. APRNs, particularly nurse practitioners and nurse anesthetists, typically earn well above that median. LPNs earn less, but their shorter training period means a faster path to employment.
Demand for nurses remains strong. An aging population, rising rates of chronic disease, and ongoing retirements from the existing workforce continue to create openings across nearly every healthcare setting. Hospitals with better staffing have also been shown to benefit economically through shorter patient stays and fewer costly complications, giving employers a financial incentive to hire and retain qualified nurses.