What classes are required to become a radiologic technologist?

To become a radiologist there aren't really any classes in high school that one needs to take. However, it would be a good idea to take classes that would make the required ones in college a lot easier. But to my understanding high schools already have a certain amount of credits required to graduate. So, really there isn't much of a choice in the matter of what to take - except for the extracurricular classes. I would suggest taking, if the school has it, AP Biology and AP Chemistry as well as Anatomy. Really any science that would be needed for college. And of course, taking the AP classes will get a person credit in college, and with enough one can start out as a sophomore.