Blanco br/Blanco County, Texas br/30 06.355' N 98 25.343' W br/br/Historical Marker: Chartered in 1883, Blanco High School began as a combination private and public school. A white limestone schoolhouse was constructed at this site and opened for classes in October 1884. During its early years, Blanco High School offered a six-month public school term and a ten-month private school term. Over the years, the school has grown through consolidation, and new facilities have been built to match its growth. Throughout its history, Blanco High School has continued to meet the need for rural education in the surrounding area.