Independent Schools of St. Louis (ISSL) is a non-profit professional association established in 1972 that includes 45 independently governed elementary and secondary schools throughout the metropolitan St. Louis region. Schools that are members of ISSL provide a complete range of educational opportunities for students in pre-kindergarten through grade 12.

ISSL promotes public awareness of independent schools and their value, professional development for staff and trustees, and collaboration among its members.

A primary tenet of Independent Schools of St. Louis’ strategic plan states that ISSL will serve as a convener (and information hub) for diversity initiatives within the independent school community. ISSL will coordinate efforts aimed at the diversification of school stakeholders in member schools by providing professional development opportunities to expand understanding of diversity and inclusion issues and best practices for ISSL schools around student and family life, teaching and administration, curriculum development, and community engagement.