Source: "Osceola Centennial Issue ..1851-1951", Osceola Tribune, Tuesday, September 18, 1956
The first class to graduate from Osceola's high school located on North Main Street was the class of 1919. Commencement ceremonies were held in the auditorium.
Graduates were:
| Ethyl Adams | Malcolm F. Forney | Dorothy McClain | Helen E. Sanders |
| Olin R. Ashby | Ruth F. Foster | Edith M. Newman | Nellie Siefkas |
| Eula F. Burns | Lena Salzer Handler | Juanita Pease | Marie Smith |
| Orval A. Black | Blanche Hines | Elise M. Paschall | Dorothy P. Totten |
| Dorothy Adaline Camp | Maurice S. Hodges | Bernice C. Persels | Netta Marie Talbott |
| Mable F. Crist | R. Eugene Husted | Vera A. Perry | Doris F. Wadsworth |
| Lena M. Chandler | Guy C. Kerr | Wilma V. Reed | Dorothy Willey |
| Enos Davis | Alice Leeps | Kenneth S. Rarick | Marguerite White |
| Eunice Mildred DeLong | LaVerne E. Lowe | Laura Beth Rudkin | Pearl Weekes |
| Gertrude Duke | Vernon R. Moomey | Lela Alice Robinson | Mary Weekes |