Good chance at college?

It definitely depends on what school you're looking at. With a 24 on your ACT it's good, but it won't get you into Harvard. However, it gets you into a lot of other really good schools. I got a 24 and was able to get into a top engineering school. My youth pastor got the same and was able to get into Princeton. Definitely keep up your hard work and start looking at colleges and see how you stack up. Generally, I think you'll find you did pretty well. :) If you find a school and you don't quite meet their expectations, work to fit their expectations and if you're just a little off, its still worth a try.