informed by both traditional techniques and materials, and the transition from purely the vernacular to the period of materials, design, and workmanship made available after the arrival of the railroad. The original historic school building and grounds on which it stands provide an authentic setting to commemorate and interpret the history of the Blackwell School. (6) The Blackwell School is closely associated with the broad patterns of local, State, and national history in the area of school segregation. Mexicans and other members of the Latin American diaspora have placed a high value upon education as a means of economic, social, and political advancement. (7) Mexican Americans and other members of the Latin American diaspora have placed a high value upon education as a means of economic, social, and political advancement. However, Hispanics and Latinos have not always had equitable opportunities and access to quality educational facilities in the United States. 4. Establishment of the Blackwell School National Historic Site (a) Establishment (1) In general Subject to paragraph (2), there is established the Blackwell School National Historic Site in the State of Texas as a unit of the National Park System to preserve, protect and interpret for the benefit of present and future generations the Blackwell School, its role as both an academic and cultural cornerstone in the community in Marfa, Texas, and its function within a segregated system of education in Texas and the United States from 1885 through 1965. (2) Conditions The national historic site shall not be established until the date on which the Secretary has— (A) entered into a written agreement with the Marfa Unified School District providing that the Blackwell School shall be donated to or placed by agreement into co-management with the United States for inclusion in a national historic site to be managed consistently with the purposes of a national historic site