This paper explores the wasathiyah approach to quality management in Islamic educational institutions. The research uses library research methods to build an established scientific discourse. The study results show that in the management of Islamic educational institutions, which includes input, process, and output, it is necessary to apply the Wasathiyah approach. The implication of this research is to provide the principle of balance in managing the quality of Islamic education following the values in wasathiyah so that educational institutions can remain grounded in the values of balance (wasath). Currently, the secularization of Islamic educational institutions has led to the loss of the goals of Islamic education. Therefore, the Wasathiyah approach to managing education can maintain the institution's balance.

Plural-multicultural-based Islamic education becomes very urgent in its implementation to compensate for the reality of plurality. Nurcholish Madjid is one of the figures who are very vociferous in voicing the idea of pluralism, but it takes a strong reading/analysis in describing his ideas. This research includes a literature review with a content analysis method with hermeneutics. The results showed that the idea of Nurcholish pluralism can be described in seven main themes, namely the themes of tolerance, democracy, justice, humanity, equality of degrees, brotherhood, and local cultural wisdom with their own peculiarities. These themes are very important to be implemented in Islamic education to create a multicultural-based Islamic education.