In 1878 a one-room schoolhouse was built from stone , but it was destroyed in the 1887 Sonora earthquake . The 500-pound bell from that schoolhouse is now on display at the current school . In 1938 a brick school house was built , it still stands today and is on the National Register of Historic Places . It is one of the oldest standing structures in the area . The St. David School District is also the oldest in the San Pedro Valley . The annual San Pedro Valley Fair has been held at the St. David High School since 1934 . In 2008 St. David held a celebration its 130 anniversary during the 75th San Pedro Valley Fair with a Town Reunion at the St. David School . Another popular cultural event held at the school is the annual 1880s Historic Costume Ball , which is patterned after a typical postbellum Indian War-era military ball
1887 Sonora earthquake
1887 Sonora earthquake
St. David, Arizona