There is no unification, and most of them are people's education editions. I only know that Bai Yan used Soviet education for the time being.

In recent years, people's education edition has been used to test teachers' qualification certificate/preparation.

If children go to school, people teach them in the county.

If it is early education, it is recommended not to teach children in advance with textbooks, which is not conducive to the cultivation of children's interest in attending classes.