To become a Pediatrician, you must finish all fur years of highschool, four years of college, medicine school, and you must have a bachelors degree in medicine. Becoming a ped â¦ iatrician requires a lot of patients because you work with children and you must cope with their families.o become a pediatrician, one does a residency in pediatric medicine after graduating from medical school. Most pediatrics residencies are three years long. Some pediatricians will choose to subspecialize in a more specific area, for example pediatric cardiology or pediatric emergency medicine.