Today’s society faces new challenges, especially related to sustainability, in which the role of science within society is becoming increasingly important. This study seeks to re-examine the focus of school science/STEM education in light of increasing societal challenges by introducing a trans-contextualisation component within science education so as to go beyond the classroom and seek to impact the societal setting. In so doing, this study, through a constructivism-humanism approach, develops a theoretical 4-phase model by adding a trans-contextualisation learning phase to a literature-supported 3-stage science education teaching model. This enhanced model is put forward to enable science education to play a stronger role in impacting societal development towards building an active informed citizenry, enabling society to reflect on potential ways to meet its needs in moving towards a sustainable future. The study seeks science educator views familiar with the 3-stage teaching approach on the enhanced 4-phase model in terms of its value, feasibility and potential constraints. Such views are shown to be positive and aligned with the generally supportive views of teachers identified in a prior study.