P.D. Jackson-Olin High School (J-O) is a four-year public high school in Birmingham, Alabama. It is one of seven high schools in the Birmingham City School System. Founded in 1952 as Western Olin High School, it was later renamed P.D. Jackson-Olin High School to honor its first principal, Pierre Denson Jackson. The school in its current form took shape in 2006 when J-O merged with Ensley High School as part of systemwide school consolidation.