TOEFL and IELTS are language scores, which are used by foreign schools and institutions to test the level of people whose mother tongue is not English, and to prove whether you have the ability to understand English teaching in class and in society. IELTS is mainly aimed at Commonwealth countries and accepted by some American universities. There are G and A classes in IELTS. Class G is universal and generally applies to immigrants. Class A is academic, and it is for those who study abroad. TOEFL is mainly a language test given by ETS, an American educational institution. Its function is similar to IELTS, but the focus is on the classroom.
SAT 1 and SAT2 are American college entrance examinations. SAT 1 has three exams, math, grammar and reading. These three themes are intertwined. Out of 2400 points, basically more than 2000 points is a very high score. SAT2 is called a subject test, and it is taken in other places. As far as I know, there are many kinds of SAT2 exams, including mathematics, physics, chemistry, Japanese, German, Korean, Chinese, American history and so on. Generally, we choose three courses, each with a perfect score of 800. Both tests are necessary for Americans and foreigners who want to apply for a better university. Because these two courses are purely academic, equivalent to the American college entrance examination, but unlike the college entrance examination, the SAT is taken once a month in the United States. No matter how many times you take the exam, you can.
The A-LEVEL exam is aimed at Britain, because I haven't applied to a British school, so I'm not very clear. I only know that it is similar in nature to the British SAT. You need to ask the landlord yourself.
AP is a difficult subject in the SAT. The words "AP" are all in front of it, which proves that this subject is quite difficult and is a bit like various competitions in our country. And if you take AP course in high school, if you pass this exam, the university doesn't need to take this course. But as a country whose mother tongue is not English, AP course is a bit difficult. Basically, we will pass the exam. Now I don't know if there is any AP course in China. After all, I took the SAT three years ago.
I hope the above things can help the landlord.