Hi~

I am currently a high school freshman going into my sophomore year, and I would like to become a doctor some day.
Right now I am thinking about going into radiology(not a technician) and I was wondering what classes, SAT/ACT scores, extra curricular activities, grades etc. I should take/have.
For college, I am thinking about UCLA, Stanford, Johns Hopkins and similar schools, what major should I choose in order to become a radiologist and any extra advices?

Thanks :)