The following schools are part of the LHSA:
Lutheran High School North

Lutheran High School South

The following are Lutheran High Schools in the Greater St. Louis Area
Lutheran High School of Saint Charles County

Metro-East Lutheran High School, Edwardsville IL

Other helpful organizations:
Association of Lutheran Secondary Schools

Missouri District, Lutheran Church-Missouri Synod

Central States Synod, Evangelical Lutheran Church of America

Lutheran Elementary School Association

Lutheran Link (Council of Lutheran Churches of Greater St. Louis)