Chang'an Junior High School

Chang'an Junior High School was founded in 1968 as "Chang'an Girls' Junior High School," part of the same era that produced several other girls'-only schools in Zhongshan District, echoing Zhongshan Girls' High's own history. The Ministry of Education designated it a key development school for gymnastics and handball in 1981-82, and it ran a beauty and hairdressing vocational program in 1988 — alongside a full renovation of the campus exterior with distinctive pink tile cladding, a look that stood out at the time.

The school became coeducational and adopted its present name in 1991, reflecting a broader citywide move away from single-sex public secondary education in the early 1990s. Its campus expanded in phases over roughly a decade, including the Ren'ai Building in 1976 and the Xinyi Building in 1979.

長安國中創校於1968年（民國57年），初名「長安女子國民中學」，與中山女中等中山區其他多所女校創立於同一時代。教育部曾於1981至82年間指定該校為體操、手球重點發展學校；1988年並開辦美容美髮職業實驗班，同時將校舍外牆全面翻修為當時獨具特色的粉紅色磁磚外觀。

1991年（民國80年）改為男女兼收，並更為現名，呼應1990年代初期全市公立中學逐漸走出單一性別教育的趨勢。校舍歷經約十年分期擴建，包括1976年落成的仁愛樓與1979年落成的信義樓。