Senior high school curriculum includes compulsory books and elective books. The knowledge in compulsory books is what high school students need to learn, and the college entrance examination will also be involved. There are several elective courses, which one to learn specifically, and the knowledge to be learned in the textbook needs the teacher to decide.
Generally speaking, as long as the college entrance examination does not test knowledge, the teacher will not teach it. Teachers will study and review the knowledge involved in the college entrance examination according to the key points.
Sometimes in high school courses, because a certain part is difficult, the exam will not be involved. Teachers don't waste time teaching. But as long as it is the knowledge involved in the college entrance examination, teachers will be involved.
Now the college entrance examination is being reformed, and the forms and subjects of the examination are changing. If it is a knowledge point that needs to be tested, the teacher will teach it. If it is a knowledge point that will not be tested, it may not be taught.