What Does a Registered Nurse Do? A Teen's Career Guide
TL;DR
Registered nurses assess patients, deliver treatments, coordinate care, and teach people how to stay healthy. Becoming one takes 2 to 4 years of college plus passing the NCLEX-RN exam. It is one of the most in-demand careers on the planet, with strong pay, dozens of specialties, and real daily impact on people's lives.
When most people picture a nurse, they picture someone in scrubs handing out medication in a hospital. That is a slice of the job, but it is not close to the full picture. A registered nurse (RN) is part clinician, part detective, part teacher, and part patient advocate. They are often the person who catches a problem first, translates confusing medical information into plain language, and stays with a family through the hardest hours of their life.
If you are a teen weighing careers, nursing deserves a serious look. Globally, there are about 29.8 million nurses today, and the world is still short several million more. In the United States alone, about 189,100 new RN openings are projected every year through 2034. This guide walks you through what nurses actually do, how the job varies by setting, what school looks like, what you can earn, and which skills to start building right now.
What a Registered Nurse Actually Does
A typical shift blends science, communication, and quick thinking. On any given day, an RN might:
- Assess patients. Take vital signs, ask about symptoms, and notice small changes that could signal something serious.
- Give treatments. Administer medications, start IVs, change wound dressings, and monitor how patients respond.
- Coordinate care. Talk with doctors, physical therapists, pharmacists, and social workers to make sure a patient's plan actually comes together.
- Educate patients and families. Explain diagnoses, walk parents through how to care for a newborn, or teach someone with diabetes how to manage their blood sugar at home.
- Advocate. Speak up when something feels wrong, push for a second opinion, or make sure a scared patient is heard.
- Document everything. Chart what happened, what was given, and how the patient responded, so the next shift can pick up seamlessly.
Doctors diagnose and prescribe. Nurses spend the most time actually with patients, which is why they usually catch changes first and shape how care unfolds hour by hour.
Where Nurses Work (It Is Not Just Hospitals)
Hospitals employ the largest share of nurses, but the profession is much broader. Common settings include:
- Hospitals: Emergency departments, intensive care units, surgery, labor and delivery, oncology.
- Clinics and doctors' offices: Ongoing care, checkups, chronic disease management.
- Schools: Managing student health, allergies, mental health check-ins, and health education.
- Home health: Visiting patients recovering from surgery or living with long-term conditions.
- Public health agencies: Vaccination campaigns, disease tracking, community wellness.
- Military and disaster response: Combat medicine, humanitarian missions, refugee camps.
- Research, education, and tech: Running clinical trials, teaching the next generation, or helping design health apps and medical devices.
The Many Specialties Inside Nursing
"Nurse" is more like "engineer" than a single job. Once you become an RN, you can build a career in almost any direction:
| Specialty | What They Focus On |
|---|---|
| Pediatric nurse | Care for babies, kids, and teens |
| ICU / critical care nurse | The sickest patients in the hospital |
| ER nurse | Fast-paced trauma and emergencies |
| Labor and delivery nurse | Pregnancy, birth, and newborn care |
| Oncology nurse | Cancer treatment and long-term support |
| Psychiatric / mental health nurse | Depression, anxiety, addiction, crisis care |
| Nurse anesthetist (CRNA) | Advanced practice, delivering anesthesia |
| School nurse | Student health inside K-12 schools |
| Public health nurse | Community health, prevention, outreach |
Advanced roles like nurse practitioner (NP), nurse midwife, and nurse anesthetist require extra graduate school but allow nurses to diagnose, prescribe, and, in many places, run their own clinics.
How to Become a Registered Nurse
In most countries, the path has three parts: earn a nursing degree, pass a licensing exam, and get licensed by your state or region. In the U.S., the typical route looks like this:
- Graduate high school with strong science. Biology, chemistry, and anatomy are your best friends. Solid math and English matter too.
- Earn a nursing degree. An Associate Degree in Nursing (ADN) takes about two years. A Bachelor of Science in Nursing (BSN) takes about four years and is increasingly preferred by hospitals and required for many advanced roles.
- Pass the NCLEX-RN exam. This is the national licensing exam that tests whether you can safely practice. It uses computer-adaptive testing, so the questions get harder or easier based on your answers.
- Get licensed by your state. Requirements vary slightly, but every U.S. state requires the NCLEX plus a background check.
- (Optional) Specialize or go further. Certifications in critical care, pediatrics, or oncology. Master's or doctoral degrees for NP, midwifery, anesthesia, education, or leadership roles.
Outside the U.S., systems differ. In the U.K., most nurses complete a three-year Bachelor of Nursing degree and register with the Nursing and Midwifery Council. Many European countries use similar three- to four-year university programs.
Salary and Job Outlook
Nursing is one of the most stable careers you can pick. In the United States, the median annual wage for registered nurses was $93,600 in May 2024, according to the Bureau of Labor Statistics. The BLS also projects 5% job growth for RNs from 2024 to 2034, which translates into roughly 189,100 openings per year as older nurses retire and healthcare demand grows.
Globally, the World Health Organization estimates the nursing workforce grew from 27.9 million in 2018 to 29.8 million in 2023, but there is still a projected shortage of about 4.1 million nurses by 2030. Translation: for the foreseeable future, qualified nurses will not have trouble finding work almost anywhere in the world.
Advanced practice nurses earn considerably more. Nurse anesthetists in the U.S. often earn well above $200,000 per year.
Skills to Start Building Right Now as a Teen
You do not need to wait for college to prepare. The most successful nursing students usually start developing these long before they walk into their first clinical rotation:
- Comfort with biology and chemistry. You will study anatomy, physiology, microbiology, and pharmacology in depth. Building a foundation now makes the rest easier.
- Calm under pressure. Try sports, theater, debate, or lifeguarding. Anything where you have to perform when it counts.
- Communication. Nurses translate between doctors, patients, and worried families all day. Practice explaining hard things simply.
- Empathy and cultural awareness. Volunteer with people different from yourself. Nursing is served on the front lines of human diversity.
- Attention to detail. Medication doses matter to the milligram. Build habits around checking your work.
- Stamina. Nurses walk miles per shift and often work 12-hour rotations. Regular exercise now pays off later.
Practical ways to test the waters before college: shadow a nurse, volunteer at a hospital or nursing home, become a certified nursing assistant (CNA) after 16, get CPR certified, or join a Health Occupations Students of America (HOSA) chapter if your school has one.
Is Nursing the Right Fit for You?
Nursing is a great fit if you like people, science, and problem-solving in equal measure. It is also honest to say what nursing is not. It is physically demanding. You will see suffering. Shifts include nights, weekends, and holidays. Burnout is real, and understaffing is a live issue in many health systems.
Positive signs that nursing may fit you: you stay steady when others panic, you are curious about how the body works, you like the idea of a job where no two days look the same, and the thought of helping someone through the worst day of their life feels meaningful rather than draining.
If any of that resonates, start exploring. Talk to nurses. Ask them what they love and what they would change. Their answers will tell you more than any brochure.
How LEAI Can Help You Explore Nursing
Deciding on a career at 16 or 17 is intimidating. That is exactly where a personalized AI tutor helps. On LEAI, you can work through structured courses on biology, anatomy, chemistry, and psychology at your own pace, ask follow-up questions the moment you get stuck, and use the "I Will Become" track to explore healthcare careers without the pressure of a classroom test. LEAI does not just hand you answers. It walks you toward them, which is exactly the kind of thinking every future nurse needs. You can also read our related guides on how to study anatomy and how to study biology to build a strong pre-nursing foundation now.
Frequently Asked Questions
What is the difference between a nurse and a doctor?
Doctors diagnose diseases and prescribe treatments. Nurses assess patients continuously, deliver most of the day-to-day care, coordinate the team, and educate patients and families. Both are essential and neither replaces the other. Advanced practice nurses like nurse practitioners can also diagnose and prescribe within their scope of practice.
Do I need to be great at math to become a nurse?
You do not need calculus, but you do need to be comfortable with algebra, ratios, and unit conversions because medication dosing depends on them. If math is not your strongest subject, that is fine. Consistent practice using tools like LEAI can close the gap well before college.
How long does it take to become a registered nurse?
The fastest common route is an Associate Degree in Nursing (ADN), which takes about two years. A Bachelor of Science in Nursing (BSN) takes about four years and opens more doors, especially in hospitals and for advanced roles. After graduating, you pass the NCLEX-RN exam and apply for your state license.