Source: The Tanglewood, San Antonio, TX education data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS) and from the National Center for Education Statistics. The average school test scores are based on all schools that completed test scores within the state. Average test scores are conducted by each state independently and the type of tests may change from one state to another. Test scores were not available for all schools within the state, but were available for the vast majority.