Diamond Ranch High School is a high school that serves students from Diamond Bar and Phillips Ranch, CA and is operated by the Pomona Unified School District in Pomona, California. In 2003, Diamond Ranch was named as a California Distinguished School by the California Department of Education. In April 2007, it was named a California Distinguished School for the second time. The Panther Basketball Athletic team competed in the Hacienda League of the CIF Southern Section.ArchitectureThe school was designed in an expressionist modern. Morphosis, led by architect Thom Mayne, and Thomas Blurock Architects were the architects. It is situated on a steep hillside on land previously considered unusable. The school's unique architectural design was recognized in the book Morphosis/Diamond Ranch High School.Because of its modernist architecture, size and location in California, the school has appeared in movies such as The Cell, Orange County, Serenity, Live Free or Die Hard;, and The Thinning. It has also appeared in several television commercials—including one for Buick.