You probably think it's much too early to have any detailed idea. There are many options and you will want to look at all of them. Right now it seems a long way in the future, but it really won't be long before you head back to North America for college. Now is the time to start preparing. Keeping your grades as high as possible is a major step toward being accepted at the college of your choice.
Colleges are also interested in more than academic accomplishments.
Your extra curricular activities are important. Emphasize the area of your interests and strengths. Colleges are looking for unique, well-rounded students with a variety of experiences. The level and consistency of your Christian experience is a factor that will be considered if you apply to a Christian school. The possibility of studying for at least one year in a Bible College after high school should be carefully considered.