The story
In 1886, the Sisters of Notre Dame de Namur founded Notre Dame Academy in downtown Dayton, a private secondary school for girls. In 1927, the Sisters were forced to move to a larger facility, and Julienne High School was formed in honor of the founder of the sisterhood, St. Julie Billiart.
The Society of Mary, founded by Blessed William Joseph Chaminade, founded St. Mary's Institute in 1850, with both secondary and college level programs. St. Mary's became the University of Dayton in 1920. With the Sisters leaving the downtown Dayton site, the Marianists purchased the old Notre Dame Academy building and opened Chaminade High School, a Catholic high school for boys.
Because enrollment decreased as times changed, the two schools merged in 1973 to create Chaminade Julienne High School. CJ students come from 45 different grade schools and more than 50 ZIP Codes.
From Wikipedia’s article on Chaminade Julienne High School, shared under CC BY-SA 4.0.5