This paper aims to supplement existing research on a joint approach to integrate sustainability into higher planning education (HPE) by facilitating an international transformative learning process. It looks at three different urban master’s programs in Serbia (Belgrade) and Germany (Berlin and Stuttgart).,In this paper, students' assessments of the pedagogical model, individual learning outcomes and the long-term value of the pedagogical model in respect of key competences for sustainability are presented and discussed. Basic assumptions of the study include that assessment from the students' perspective can provide feedback on the transformational learning experience with the aim of improving the experience and thus learning outcomes; help identify limitations and target specific areas for improvement in the pedagogical model; and improve the evaluation of effectiveness in developing knowledge and skills for sustainability in HPE.,The paper provides evidence that a learner-centered and action-oriented approach, as well as a global dialogue among peers from different backgrounds and nationalities, is an effective way to educate future generations of urban planners to become “change agents” for societal transformation toward a more sustainable future within their respective contexts.,The paper is a supplement to the existing research on educational initiatives that attempts to integrate sustainability into the curricula, especially of urban-related programs; showcases outcomes of the pedagogical model(s) for sustainable development applied, especially when addressing the competences of students working in developing, transitional and developed countries or different geographic contexts; and shows long-term learning outcomes after the students move into work practice.