This book outlines the concept of a discrimination-critical school for the first time, which considers the fields of anti-discrimination, right-wing extremism prevention, inclusion, and intercultural openness as interconnected and views them as a shared responsibility of schools and partners from youth social work and political education. At its core are fundamental reflections on a democratic school culture and the quality standards developed from them, which provide practical guidance for school-related areas of action. They aim to help further develop one's own practice and reflect on the interplay of educational attitudes, methods, and necessary structures. Thus, a proposal for a comprehensive school development program is presented, offering various approaches in small steps and a reflective tool for educational action.