Highland High School (HHS) is a public high school located in Gilbert, Arizona, United States. It was built in 1992 and is part of the Gilbert Public Schools district. It accommodates grades 9–12, and in 2010, the school had a student body of 2,957.

Gilbert is one of the fastest-rising communities in the United States. Located in Maricopa County, Arizona just southeast of Phoenix, Gilbert is home to 288,128 residents. It is the fifth-largest municipality in Arizona. Nearly a third of Gilbert residents are under the age of 18. As Gilbert approaches buildout, the estimated population is expected to reach 330,000 people.