The Concordia Lutheran School Foundation (CLSF) was established in 1988 in Peoria, Illlinois. CLSF provides financial support to benefit Concordia Lutheran School, its students, staff and educational programs. The Foundation receives, holds and administers three types of funds: scholarships, special endowments and general endowments.

A not-for-profit organization, CLSF is separately incorporated from Concordia Lutheran School and governed by a Board of Directors. The Board consists of elected individuals from each of the three sponsoring Peoria congregations: Trinity, Mt. Calvary and Redeemer Lutheran Churches. Also included are the current School Board President and Executive Director.