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Part of the [Worldwide CCAS Project](https://www.ccas-project.org/). ## Additional Graphs --- ### Descriptive Below is an interactive graph of the age of each city's high school CCAS in 2020. The biggest cities in China, Beijing, Shanghai, Shenzhen, and the south-east coastal cities were pioneers in implementing a CCAS for high school admissions. Below are maps showing the establishment years of CCAS for all investigated cities. ![High School CCAS Establishment Year](/assets/img/H.png) ![Primary and Middle School CCAS Establishment Year](/assets/img/PM.png)