In 1916, the LCMS congregations in Fort Wayne started the Luther Institute, a two-year secondary school teaching basic office skills such as typing and shorthand, and also business law and Bible classes. Initially the school used facilities in those congregations. In 1920, the leaders of the Luther Institute suggested a merger with the high school department of
Concordia College, but no agreement was reached, so in 1924-25 the institute erected a three-story building (demolished in 2006) at the corner of Barr and Washington. By 1947, increased enrollment had strained the 300-student capacity of the building, so the association constructed a new classroom building on in the southeast corner of the college campus. The new building at Anthony Boulevard and Maumee Avenue opened in 1952. The high school continued to use the athletic and other facilities of the college. In 1955, the name of the school was officially changed to Concordia Lutheran High School. In 1973, a music wing, a chapel-auditorium, and additional classrooms were constructed. More land has also been added to the campus, including along Crescent Avenue donated by
Fred Zollner and the “Our Creators Classroom” nature area north of the school, raising the size of the campus to . Zollner Stadium has also been rebuilt. == Academics ==