It depends on where you have been. TOEFL is applicable to North America, and IELTS is applicable to Britain, Australia and Canada. You should also weigh these two tests. Personally, I think IELTS is easier to test, especially for students with poor English foundation, and the new TOEFL is still more difficult.

As for the language test, the domestic test will be simpler than that of foreign countries, so I suggest you go abroad after the domestic test. Anyway, you need language scores to get a visa. So you must calculate the time when you go abroad and the time it takes to apply for a visa, and then calculate when is the best time for your exam. For example, if you want to go abroad 1 year, if it takes 3 months to apply for a visa, and it usually takes 1 month to get a language score, then you must take the exam again after half a year.

So I haven't given you a year. If you go abroad to study in high school or prepare for college before you graduate from high school, it will be good for you that the language performance requirements will be lower than those of high school graduates who directly report to college. So it should be okay to try to surprise.

However, since we have decided to go abroad, we should shift our focus to English learning and deal with other subjects casually. Make it clear to your high school teachers that they should also help you, understand you and support you.

If you think that studying in high school is not helpful to your language learning, you can choose to take an English test class. Universal and Kai Tak are both good. Because if you go abroad in the middle of high school, it means that you don't have a high school diploma, so it's ok for you not to go to school. But many of my friends usually go abroad after graduating from high school, just don't take the college entrance examination, and get their diplomas after taking the exam. After going abroad, I also attended the preparatory course.

In fact, there are many things that you need to think about yourself. A year is not much. You'd better ask your parents or an intermediary to help you get a visa and concentrate on preparing for the language exam. However, the most important thing is to be clear about your goals and firmly choose which way to take. The consequences of giving up halfway are very serious (for example, you can't pass Chinese and you want to give up, but you don't want you in high school, which is troublesome). Poor English foundation really doesn't matter. Come up with another trick, master more exam skills, and you'll be fine!

Finally ~ I wish you success.