Does anyone know how I can get ready in high school for a career in Radio?

One way would be for you to DJ school dances.

On the off chance that your school has FFA (Future Farmers of America) they have a radio team. I know because I had to be on it to pass Ag when I was a senior in high school. You might check into that. ;)

See if you can get a job at one of the local stations. When I was in high school, my friend and I got a job sweeping up, doing some filing and helping with some on-site activities.

During college my friend continued to work for the station and even got to do some on air time.

To be a radio DJ it really takes no experience, except for speech, so you should take some classes that practice public speeking so you're not scared to have your voice played on the radio, and you should be prepared to say whatever you boss wants, and you cannot screw up any songs man, its pretty easy to do... my family's business is a radio station, if you want to e-mail me, and ill give you some advice: [email protected]