How do I delete people who are following you on twitter?

[Katy]

Lots of people from school are starting to get twitter, and I don't want them to see my tweets because I like having the privacy of putting what I want. Is there any way you can remove them? So they can't see your tweets, I've just protected my tweets but there is some people still following me. Thanks in advance.
But they can still see your tweets?

[POPCORN]

Just go onto their profile and click "block user"

[corki]

i hate that, i tweet celebrities like "heyyyyy follow me pleaseeee!!!" tad embarrassing and i don't want my friends from school seeing me act like an idiot :') mwahaa hope you get your privacy soon

[Ninetales]

Go into the settings and set your account to private. Then if someone wants to follow you they need your permission.

EDIT

Or create a new account not telling anyone about it. Then use your old account for things you don't mind them hearing and the new account for things you don't want them to hear.