Legal analysis: the scope of joint recruitment mainly includes nine districts and some districts and counties in the main city. Nine districts of the main city: Yuzhong District, Shapingba District, Nan 'an District, Yubei District, Beibei District, Jiangbei District, Banan District, dadukou district District and Jiulongpo District. Other districts and counties: Changshou District, Yongchuan District, Qijiang District, Dazu District, Tongliang District, Rongchang District, Bishan District, Chongqing City, and key middle schools at the district and county levels will allocate 70% of the enrollment plan places to junior high schools in their respective jurisdictions according to the number of unified enrollment plans of the Education Commission and the specifications of junior high schools, and the quota of index students will be uniformly announced. Due to different local policies, the distribution method may be slightly different. Junior high school graduates can fill in the volunteers of the index students. There is also a model of completely independent enrollment in Jiangjin, Qijiang and Tongnan counties. The county education department independently completes the proposition, marking and admission. Candidates cannot apply for ordinary high schools in other places, but the key middle schools directly under the city enroll students separately in these three counties. ? However, this admission quota is very small, and the pressure of competition will be even greater. ? The senior high school entrance examination is supplemented by 3+4. The so-called "3+4" segmented model, that is, three years of secondary vocational schools and four years of undergraduate courses, implements "integrated" training. During the seven-year training period, secondary vocational schools and undergraduate colleges will jointly develop a teaching system combining theoretical knowledge courses with skills training courses, so as to systematically cultivate compound and applied technical talents at the undergraduate level. Students who have passed the 7-year study and graduation examination will be awarded bachelor degree certificates by undergraduate colleges, enjoy the treatment of ordinary undergraduate graduates and be employed according to the employment policy of college graduates in that year.

Legal basis: Article 11 of the Education Law of the People's Republic of China adapts to the needs of the development of socialist market economy and social progress, promotes education reform, promotes the coordinated development and convergence of education at all levels, improves the modern national education system, improves the lifelong education system, and improves the level of education modernization. The state takes measures to promote educational equity and balanced development of education. The state supports, encourages and organizes educational scientific research, popularizes the achievements of educational scientific research and promotes the improvement of educational quality.