Avondale High School is a former high school located in unincorporated Dekalb County, Georgia, United States; a part of the DeKalb County School District, it was adjacent to, but not inside, the City of Avondale Estates.

[3] Under the guidance of Head Coaches Calvin Ramsey (1951–1969) and Crawford Kennedy (1970–1988), the Avondale Blue Devils football team was one of the top programs in Georgia from the 1950s through 1979.

[4] During this time, 61 Avondale players were named to the All-State team.

[4] In November 1978, The Atlanta Journal-Constitution cited Avondale as the winningest high school football team in Georgia for the previous 20 years (1958–1978 record 199-30-6, for a winning percentage of 85.96%).

[3] However, in the mid-2000s, the Lady Blue Devils basketball team won the Class 3A State championship in 2006.