Ironwood High School is a public secondary school located in Glendale, Arizona, United States, part of the Peoria Unified School District. The school opened in August 1986 with its first graduating class in 1989. Since 2004, it has offered the IB Diploma Programme to its junior and senior year students, with a Pre-IB program for its freshman and sophomore-year students. It is the district's third-largest high school by enrollment.