First of all, there is no difference between the quality of teachers in Shanghai New Oriental School and that in Shanghai New Oriental School. Teachers are always teaching, and the teachers in Shanghai New Oriental School have been screened to varying degrees, so the quality of teachers is absolutely guaranteed.

Secondly, your English level is average. Although you have passed CET-4, you haven't read much English in college. Then you can start from the TOEFL basic class, go to the basic class in winter vacation and go to the intensive class in March next year. The exam time in July is just right.