In order to be a pediatric nurse you need to become a registered nurse and have a bachelor's of science in nursing degree which generally take four years to achieve. There are many other certifications you can earn later in your career, but they are not essential. Day to day tasks include "well child" exams, administering vaccines, running test, and many more things. Without nurses doctors offices and hospitals would have a hard time getting anything done. On average a pediatric nurse will make $63,000 a year and there is great job security in this field because there will always be sick or injured people who need help.