If you will be in a gymnasium system (Germany, Denmark, Finland, etc.) you will find that by the time you hit 10th or 11th grade, the classes will be at our junior college level.

On the other hand, many U.S. universities are the best in the world, so you may want to seriously consider returning when it’s time for college.

A few other differences — no competitive sports! If you are an athlete, that will be done outside of the school environment. You won’t have as many elective courses either; nor as much choice in what you take. Generally you can select a career path, but the courses in that path are set.

Of course, these are just bare generalizations … knowing what country you are going to would help.

Also, you will really need to work on whatever your language will be AND your English!

Good luck and have fun!

Be your self, do your research and have a great time!