In fact, the quality of extracurricular classes depends on the teachers, so I recommend several teachers.
Mathematics: Experimental Middle School Tao Jie No.1 Middle School: Gao Peng
Biology: Xinhua Middle School: Zhang Fenglan
Language: Xinhua Middle School: Zhu
Chemistry: Nankai Middle School: He Wen
That's all I know. In addition, it would be best if we could find an advanced class for teachers and researchers in various districts to give lectures.