The aim of this paper is to evaluate the school administrators' values-based management behaviours according to the teachers' perceptions and opinions and, accordingly, to build a model of values-based management process in schools. The study was conducted using explanatory design which is inclusive of both quantitative and qualitative methods. The quantitative phase of the study was designed in the relational-screening model. The quantitative data were collected from 305 teachers working in the province of Sivas through Values-Based Management Scale. The qualitative phase of the study, however, was conducted using case study design. The qualitative data were collected from 10 teachers working in the province of Sivas. The quantitative findings of the study suggest that teachers perceive the administrators' values-based management behaviours as highly positive, while qualitative findings show that they attach great importance to the administrators' values-based management behaviour. In this sense, it can be said that the qualitative findings account for and are supportive of the quantitative findings. The "model of values-based management process in schools" built based on research results are presented in the Conclusion section.