Because the subject knowledge of this grade has been relatively stable, students have a solid foundation and can be better measured and evaluated.

The national examination is generally held in May each year, and the examination covers subjects such as Chinese, mathematics and English. In the primary school stage, the national examination is generally conducted in the fourth grade, which is an important node in the primary school stage. Students usually learn some basic subject knowledge and skills in this grade, so the national examination can better understand students' academic level and learning situation.

National examination refers to the national examination of students' academic level, and it is a national examination to fully understand students' academic level.