Education systems are increasingly expected to integrate sustainability-related competencies within formal curricula; however, practical models for embedding such competencies remain limited. This study examines how financial literacy can be operationalized as a transversal sustainability competence through a public–private partnership (PPP) model implemented in Romania between 2022 and 2025. Adopting a longitudinal single-case study design, the analysis combines program-level indicators with evaluation data across three implementation phases: pilot, structured regional expansion, and national consolidation. The findings indicate that financial literacy can be progressively integrated across disciplines through teacher-mediated approaches supported by continuous professional development, adaptable instructional resources, and balanced governance arrangements. The results further show that scaling occurs through multidimensional processes involving increasing pedagogical depth, sustained teacher engagement, and gradual institutional embedding. In this context, PPPs function as enabling governance mechanisms that facilitate resource mobilization and coordination while preserving pedagogical autonomy. The study contributes to the literature by conceptualizing financial literacy as a sustainability-relevant transversal competence, advancing understanding of ecosystem-based scaling in education, and providing a practice-oriented model for integrating such competencies within formal schooling systems.
Mina-Raiu et al. (Sun,) studied this question.