Registered nurses have plenty of specialities to choose from, and those who love children find pediatrics nursing particularly rewarding. Pediatric nurses specialize in caring for youngsters up to age 18.Think this is the career path for you? The most common way to become a pediatrics nurse is by becoming a registered nurse, working in a pediatric setting for a few years, and then returning to school to pursue a master's degree. Students working toward becoming registered nurses take plenty of courses with a science focus during their undergraduate career. Biology, chemistry, anatomy, physiology, and similar classes form the foundation of your bachelor's degree and will be critical for obtaining a master's degree. Pediatric nursing programs can be competitive, so gaining experience while you're still an undergrad is encouraged. Volunteer in a children's hospital and find a mentor who specializes in this field. The pediatric nursing program is a blend of classroom lectures, lab work, and clinical training. You'll build upon your knowledge of nursing to learn more about child physiology, human development, child psychology, and how to care for ill children. After you've completed your studies, you'll be eligible to sit for the certification exam administered by the Pediatric Nurses Certification Board or the American Nurses Credentialing Center.