1973 - The school was founded as Bethel Christian Academy, a ministry of Bethel Baptist Church, located near North 76th Street and West Luscher Avenue. The first classes were held in the basement of the church and in the balcony and sanctuary. Bethel Christian served 24 students its first year.
1975 - The school becomes Heritage Christian Schools and incorporates as an independent, non-denominational K-8 school. The school's enrollment was approximately 80 students. Plans for a full program were underway.
1979 - HCS graduates first student from high school.
1984 - Entire school moves into the 108th Street location. This central location of the new facility resulted in a continued increase in enrollment. Soon, another building was needed to adequately provide for the continuing demand for classrooms.
1989 - Elementary is relocated to the vacated Linfield Elementary School building on Elm Grove Road. It was leased annually from the Elmbrook School District. The facility is located on 6.5 acres of land in a quiet corner of Brookfield.
1997 - A generous donation allows HCS to purchase the Linfield building.
2001 - Elementary campus named “Ned & Elfie Gallun Building” in honor of their donation. The K-12 enrollment is approximately 1,100 students.
2002 - Heritage graduates its 1,000th student.
2003 - HCS Preschool is opened.
2006 - Opening of North Building on 108th Street campus.
2010 - All school divisions from Preschool through High School are consolidated back at the 108th Street Campus.
2011 - HCS Preschool through high School relocates at the Lower Elementary (WeatherStone), Upper Elementary (St. Luke's) and Middle/High School (Pleasant Hill) campuses.
2013 - HCS celebrates 40 years of educational ministry.
2014 - HCS purchased former Glen Park School in New Berlin.
2015 - The Middle/High School moved into the new campus and the Elementary combined campuses (WeatherStone).