If you don't want to attend the competition class, it doesn't matter whether you want to study in advance. And I took part in the competition, and I didn't study in advance.

Of course it has something to do with your own situation. If the foundation is not good enough, you can learn some. Of course, formal classes should also be carefully listened to, because the bridging class is not deep, which mainly plays a role in guiding learning habits and methods.

The reference standard is about 95 ~ 100 in primary schools.

Under the general development, it is 90 at 95 ~ 100 in junior high schools and 85 at 90 ~ 95 in primary schools (of course, it depends on your efforts).

Kid paper, come on! ; -)