Seeing the need of a girls' school, a board of trustees was selected consisting of the Rev. Lemuel H. Wells, John S. Boyer, Philip Ritz, B. L. Sharpstein, A. B. Elmer, Judge J. D. Mix and John Abbott. Funds were obtained in the East and a frame building was erected near the corner of Third and Poplar streets.
The school prospered, and it was decided to make it a boarding school. More money was raised in the East and in Walla Walla, more land was purchased and a dormitory was built.
In September, 1873, it was opened as Saint Paul's Boarding and Day School for Girls, with Mrs. George Browne as principal. Mrs. Browne was succeeded by Miss Henrietta B. Garretson (who later became Mrs. Lemuel H. Wells) and the Rev. J. D. Lathrop, D. D.
In the earlier days of the school, pupils from Idaho, Montana and Eastern Oregon frequently paid their tuitions in gold dust, and there were a few cases where payment was even made in produce, such as flour, and potatoes. One parent paid in cattle, which remained on the ranch and multiplied until they paid for an addition to one of the school buildings.
The school was successfully maintained until the year 1885, when it was closed. It was reopened in 1897 under Miss Imogen Boyer, as principal. It was incorporated September 14, 1897, by E. B. Whitman, Rev. Francis L. Palmer, B. L. Sharpstein, W. H. Upton, and J. H. Marshall, Rev. F. L. Palmer being chosen its first president.
In 1899 a new site was purchased on Catherine Street, and a new three story building erected named "Appleton Hall." The trustees at that time were Bishop Wells, The Rev. Andreas Bard, B. L. Sharpstein, Levi Ankeny, R. F. Smitten and W. H. Upton. Miss Imogen Boyer was principal, and so continued until her resignation in 1903. Under Miss Boyer's administration the school increased substantially in prestige and in the number of pupils in attendance.
In 1903 Miss Caroline F. Buck was elected principal, and by formal agreement between Bishop Wells and the board of trustees the school was thenceforth to be conducted as a diocesan school of the Protestant Episcopal Church.
In 1904 Miss Buck was succeeded by Rev. Andreas Bard, as principal.
In 1906 funds were secured by Bishop Wells for the erection of a new three story brick dormitory named "Ewing Hall" which greatly increased the accommodations for boarders and materially assisted in the growth of the school.
In 1907 Rev. Andreas Bard resigned and was succeeded by Miss Anna E. Plympton, who remained until 1910. Miss Nettie M. Galbraith was then elected principal, and under her able administration, assisted by Miss Mary E. Atkinson, as vice principal, the school has grown rapidly year by year until it is now the largest, as well as the oldest school for girls in the State of Washington, and probably in the entire Northwest.