The Thomson's established their school along the lines of the Presbyterian Ladies' College, Melbourne, ensuring that all teachers were specialists, that students achieved high academic standards, and that girls were active in sporting interests and displaying good manners and Christian standards. However, at the end of 1914, financial difficulties forced the sisters to resign and return to Melbourne, prompting the Convenor of the Presbyterian Church in Queensland, the Rev. James Gibson, to give an undertaking that the Church would assume ownership of the school. A private company, The Presbyterian Ladies College Limited, was established, and Spreydon College was subsequently renamed and reopened in January 1915 as "The Presbyterian Ladies' College, Toowoomba" (P.L.C). The Church also appointed Amy Carson as Principal that same year.