Palo Alto Senior High School, commonly referred to locally as "Paly", is a comprehensive public high school in Palo Alto, California. Operated by the Palo Alto Unified School District, the school is one of two schools in the district, the other being crosstown Gunn High School, for which the school has a rivalry with. Palo Alto High School was originally established as a private school in 1894. The school was later established as a public school four years later, and a new campus was built in 1918. The school's property is adjacent to Stanford University, who provided the land for the school.