Haruko Hatoyama was born in Matsumoto, the youngest of seven children. Her father, Tsumu, was a samurai. He changed the family name from Watanabe to Taga after the Meiji Restoration in 1868. Her education began at home with her mother, and was supplemented by the lessons from local teachers of Chinese classics. Her education was different from her sisters because she was allowed to pursue the same curriculum as a boy. She was among the first students to enroll when a small, all-girls school opened in Matsumoto in 1873. However, her knowledge was so advanced that her father decided to pull her out of the small school and take her to Tokyo to be educated. She attended the Takebashi Girls' School, which had been opened by the government in 1872 for the purpose of training female teachers. Her lessons were held both in her native Japanese dialect and in American English. After the government closed the school in 1877, the Education Ministry transferred her and her classmates to a newly established English section within the Tokyo Women's Normal School. She graduated in 1878. She continued her education by enrolling the Tokyo Women's Higher Normal School. In 1879, she was one of three students selected by the Ministry of Education to study in the United States. She graduated in July 1881, and briefly joined the faculty until she got married, at which point she resigned.
Family
Haruko married Kazuo Hatoyama in an arranged marriage on November 16, 1881. Her behavior was different from that of a typical bride of that period because she held a job outside the home and engaged in translating legal documents. Kazuo Hatoyama was speaker of the House of Representatives of the Diet of Japan from 1896 to 1897 during the Meiji era. Kazuo later served as the president of Waseda University. Haruko died at home on July 12, 1938 of arteriosclerosis. in Tokyo.
Haruko was one of the leaders of the strong Westernizing trend, Bunmei Kaika. She wrote several essays for women's magazines on the importance of raising the level of women's education in Japan. After helping found the Kyoritsu Women's University, she became head of the newly created home economics department. In December 1922, she became president of the school, and held this position until her death. She was a member of the Japanese Women's Hygiene Association, Women's Patriotic Association, and the Japanese League of Women Association, among others. She received awards from the Imperial Household Ministry, the Tokyo prefecture, Tokyo City, the Tokyo League of Women's associations, and the Koishikawa Young Women's Association.