doubly historic spring valley science ary school detail san francisco 8

doubly historic spring valley science elementary school francisco seven schools founded california gold rush days early statehood 1852 left making oldest state name reference natural underground springs president chester arthur signed chinese exclusion laborers country board education students black segregated separate unequal head american born mamie tape enroll 1884 barred federal supreme court landmark 1954 decision brown discrimination public unconstitutional built rural setting sandwiched homes security fencing detail