To be honest with you, no college is going to be thrilled that you did something against school policy. That said, it's not the end of the world or anything. Whether they look at it at all depends on several factors: Was it a criminal act? Was it committed while you were in high school? Is it on your permanent record? If the answer to all of these questions is "no", a college most likely will not care. If you're going to a local college, or if the name of your new school indicates that you were sent there due to an issue, they may ask you about it in your interview, but they have no grounds on which to deny you admission.

If any of those questions have a "yes" answer, you will probably need to discuss it at some point in the application process. Many applications will have a box asking if you have ever had a discipline problem or a criminal record and ask you to explain what happened. In this space, be honest but also try to mention if you have had no further infractions or if your record has/will be expunged at another time (if you don't know what this means, ask your guidance counselor or principal). You can also address it in any interviews you have (and this might be a good reason to have one even if they are optional for your schools of choice), and take the opportunity to show in person that you've grown into a responsible adult.

To sum it up, don't worry too much about it. You can still get into a good school. Keep your grades up, stay out of trouble, and be involved in your community, and colleges will absolutely be willing to overlook one bad decision.