Elective courses in senior high school are optional in the college entrance examination. The differences between compulsory courses and elective courses are as follows:

The compulsory contents of senior high school (Chinese, mathematics and English) are the academic requirements that must be completed in senior high school. Because it is the content of the high school graduation level exam, high school students have to learn before they can graduate. At the same time, the compulsory content of high school is also the compulsory content of the college entrance examination, and the score in the college entrance examination is relatively large. The total score of each compulsory exam is 150.

The elective content of senior high school is set according to students' interests and development direction. The high school graduation level exam does not take elective content, but the college entrance examination requires three elective courses. The total score of each elective exam is 100.