what is the best medical school for oncology in the country?

try johnhopkins or georetown university there both in MD

Medical Schools dont teach Oncology.   The specialty is an "on the job" training after medical school at a Hospital that is attached to a University program.

First one gets their Medical Degree.   Then you get a residency in  Internal Medicine,  that takes 3 years. Then you get a "specialty in Oncology"   that takes another 2  1/2 years at an institution that specializes in that particular field.

Oncologist ,  doesnt do surgery either, that is another specialty that goes like this.  First Med School, then General Surgery or OBBYN for 4 years Residency,  then specialty in a particular field of surgery,  could be Gynecological Surgery,   or Thorasic surgery,  thats another 6 years of training.