PLANEA carries out an innovative model of secondary school that foster transforming education to guarantee and adolescent’s center approach on three levels: a macro level through working with provincial education authorities to enable normative regulations to create new conditions for school functioning, a meso level that proposes a continuous networking strategy among school actors, principals and teachers to foster school and classroom changes to enhance adolescent wellbeing, foundational learning outcomes and digital and transferable skills development. Finally, the program addresses teaching, student assessment’s and learning process transformation by introducing inquiry-based teaching strategies, through project-based teaching and learning, problem resolution and participatory pedagogies. It also fosters the implementation of Health advisories at the school to assure adolescents integral support on social, sexual o reproductive, and mental health concern. Together, these three levels are articulated in pursuit of a common goal: meaningful educational trajectories, achieving expected learning outcomes and skills development, while fostering adolescent’s secondary school terminality. PLaNEA proved to contribute to support priority educational governments to scale up secondary school transformation: reaching since 2018 30% of public schools in Tucumán, duplicating transformation of most vulnerable schools in Chaco, and serving as pedagogical approach to develop a new secondary school modality with doble school graduation certification: regular secondary school plus vocational training certificate in ICT skills. PLANEA program technical assistance to public officials served to adjust regulations to adapt school curricula, teaching and learning environments, to promote an adolescent’s centered approach that is showing very good results.