Karen Wagner High School is a high school in unincorporated Bexar County, Texas. The school is operated by the Judson Independent School District. The school has a San Antonio address but is not within the San Antonio city limits. The school was named after Lieutenant-Colonel Karen Wagner, a United States Army officer and Judson High School alumni-class of 1979 who was killed when an airplane struck the Pentagon on September 11, 2001.