This paper intends to explore the history of the establishment of Beigang Taiwanese Girls’ Public School and its hidden lessons. During the Japanese Colonial Period, it was built on Beigang Street of Beigang County in Taiwan. Currently the old site is occupied by Bei Chen Elementary School, Yunlin County. By collecting, organizing and analyzing historical documents from the school, Yunlin County Government, Taiwan Nichinichi Shimpo (Taiwan Daily News), Taiwan Sotokufu (the central government then), and other primary and secondary references, its history is reconstructed. Some wrongly-documented information is revealed and clarified. First of all, there is a systematic introduction of the school’s background, including how, why and where it was established, the sequential order of its changes of name, and the architecture of its buildings. Secondly, clarifications are made of its mistaken information. For example, its incorrect establishment order is displayed. The improper titles and names of the elementary schools in Beigang County during the Japanese Colonial Period are also mentioned. Thirdly, through these historical data, a developing sense of equalized rights between men and women was acknowledged. The establishment and growth of this girls’ public school allowed and ensured women’s right of seeking better education and higher social status. It is especially valuable at a time when women were supposed to be a role only contributive in families.