High Quality Content by WIKIPEDIA articles! Amador Valley High School is a public high school in Pleasanton, California, USA, a city east of San Francisco. Amador Valley is one of four high schools in the Pleasanton Unified School District, which includes Foothill High School, Village High School, and Horizon High School. The school was founded as Amador Valley Joint Union High School, from which its first class graduated in 1923. The school has been named a California Distinguished School, a National School of Character, and a National Blue Ribbon School.