The multicultural era requires habituative awareness of diversity in schools as a praxis of multicultural education to instill awareness of diversity. This study aims to obtain a model of implementation of multicultural education in building harmony in diversity in schools. The research method uses qualitative with a case study approach. Data collection techniques use active-participatory observation, semi-structured interviews, and documentation.The results showed that the curriculum is integrated with the values of humanism and pluralism, its implementation is designed with social action programs. The next implementation goes through stages: prejudice reduction, content integration, equality paedagogy, and empowering school culture and social structure. This research contributes to the implementation of multiculrural education in schools, and is very urgent to be carried out in schools in line with the digital era of multicultural mixing globally. Keywords: Education, multiculturalism, values, harmony, diversity