Crossroads Christian School Association was officially formed in 1978 under the leadership of Roger Harris.

The school was opened on the Crossroads Christian Church property on the corner of Rancho Rd.

The preschool opened in 1979 with half-day and full-day classes for 2-5 year olds.

In September 1983 the school purchased 3 acres (12,000 m2) to be able to relocate to a new campus at 1400 Fullerton Ave in the City of Corona and enabled the elementary school to grow and develop and allow the preschool to expand at the old campus.

Over the next few years more buildings were built and fifty thousand square feet of office and educational space developed.