 From 1922 to 1988 , the school was part of the AVJUHSD . Originally this district also taught students from nearby Dublin and served the local rural community . In the late 1930s , the Amador Theater was added to the main campus building . The " original " campus building ( c1922 ) was taken down in 1968 leaving only the theatre towards the front of the Amador Valley High School campus . The theater hosted school plays , band concerts , performances , lectures , and assemblies , and was the former home of the successful community theater group Cask and Mask , now known as The Masquers . The Federal Aid Highway Act of 1956 led to the building of a series of freeways in the region , which led to increased population and an increase in student enrollment . 
