Why do foreign hukou in Beijing need social security to live in a district?

Because of the regulations of Beijing Education Bureau. Students and parents with foreign household registration need to provide proof of paying social insurance or individual tax for two consecutive years if they want to take the senior high school entrance examination in Beijing. Moreover, these certification materials must be issued within the jurisdiction of Beijing, and the certification materials in the same district must be continuous. Therefore, students and parents with foreign household registration need to pay social insurance or individual tax continuously in the same district if they want to take the senior high school entrance examination in Beijing, so as to submit relevant supporting materials when applying.