Contemporary phenomena, including modernization, globalization, and migration, have altered the sociopolitical and cultural conditions of schooling. Schools are called upon to respond to such change through improvement efforts fostering intercultural education. To this end, this research examines school actors' perceptions of the successful components of school improvement in culturally diverse schools. For the purposes of this research, we used the Cypriot education system as our case study to carry out observations and interviews with head teachers, teachers, immigrant and native students, and their parents. In identifying the inputs for the improvement of culturally diverse schools, as perceived by school actors, various components emerged, including listening to student voice, socioemotional and culturally responsive teaching, and increased parental involvement. Arguably, these contributing factors bear implications for school-based leadership, building successful professional communities, and enhancing intercultural competence in schools.