The experimental class of Renshou No.1 Middle School South Campus "Strong Foundation" experimental class "Qing Ji" experimental class "Innovation" experimental class is the related expansion of key classes; (1) Teaching in small classes, with no more than 50 students in each class. Fully implement the classroom teaching reform, comprehensively promote the school's opening to the outside world, highlight its personality, develop its characteristics, and comprehensively cultivate top-notch talents with world vision, China feelings and innovative thinking. (2) Three types of experimental classes are planned 1. "Strong Foundation" Experimental Class: Implementing "Four Excellent" Teaching. The school will continue to rely on the strategic cooperation platform with Chengdu No.7 Middle School and Chongqing No.8 Middle School to fully enjoy the high-quality resources of two famous schools inside and outside the province; Deepen the cooperation with the well-known national education and training team "Ai Peiyou (composed of gold medal coaches graduated from Peking University and Tsinghua)" and accurately implement strong foundation training and competition training; Select high-quality teachers from the south campus of Renshou No.1 Middle School, build a smart classroom, promote students' deep learning, cultivate students' comprehensive quality, and deliver first-class high school graduates to "double-first-class" prestigious schools. 2. "Qing Ji" experimental class: Based on the all-round development of students, explore and practice the "administrative class teaching system" and "elective class teaching system", improve students' learning ability and learning level, and send first-class high school graduates to "double-first-class" prestigious schools. 3. "Innovative" experimental class: In-depth cooperation with high-quality high schools, adopting the method of simultaneous live broadcast of classroom and learning materials, helping students grow up with innovative educational methods, and delivering outstanding students to key institutions.