Erchong Junior High School

Erchong Junior High began in 1956 as a branch of Zhudong Junior High before becoming an independent school in 1962. Located in Erchong Village — an area of Zhudong that expanded alongside the township's commercial and residential growth — the school has kept pace with a rising student population: the county government has approved a self-funded expansion of roughly NT$390 million to accommodate continued enrollment growth. Today the campus runs 39 student clubs, from varsity volleyball to its long-running wind-band program.

二重國中創立於民國45年（1956年），原為竹東國中分部，民國51年（1962年）獨立設校。校址位於竹東鎮二重里——隨著竹東鎮商業與住宅發展而擴張的地區。因應學生人數持續成長，縣府已核准約新台幣3.9億元的自籌經費擴建計畫。目前全校共有39個社團，從排球校隊到歷史悠久的管樂團一應俱全。