Can those who are not in Jiangning apply for Jiangning's high school?

I can't. Nanjing high school public schools accept foreign children, provided that they have a complete junior high school status in Nanjing, and those who are not in Jiangning cannot apply for Jiangning's high school. Jiangning District, one of the eight main urban areas in Nanjing, is located on the south bank of the lower reaches of the Yangtze River, bordering Jiangsu and Anhui in the southwest, Qixia District and jurong city in the east and Lishui District in the southeast.