The aim of this paper is to provide an overview of the introduction, implementation, evolution, hybridization, and initial research into the constructivist instructional models deployed within a secondary (high) school in Australia. A concomitant aim is to relate some of the consequences of whole school pedagogical change, which have included the implementation of project- and problem-based learning, the flipped classroom, and a derivative hybridized form, referred to here as "flipped PBL." Moreover, after a decade of using constructivist approaches, we initiated educational research to better understand some of the effects of these changes and to explore the reasons behind the successful implementation of the models. While still in its infancy, the nature of this research and some of the preliminary findings are detailed here.