What do i need to do to become a pediatric oncologist?

I think I answered this the other time. 8th grade, you're doing it already just by getting good grades. If you keep them up all through high school, you get in the best colleges. When you're in high school, take courses like biology, chemistry, anatomy, (if it's offered), math, language especially Latin, If they teach that any more. You will find that most diseases are of Latin in nature. Either the beginning or the end of the disease name. Also study the metric system because everything in medicine is in the metric system. That's a good start. Good luck