1. Shule School, an educational institution that started with mathematics, compiles its own teaching materials.

2. In Su Sheng, there are many teachers in public schools, and the teaching materials are not uniform.

K 12 chain education institutions are:

1. New Oriental

2. Spark

Step 3 study and think

4. Xueda

These gusu district companies are quite concentrated, and the order has nothing to do with ranking. I hope I can help you.