Austin Independent School District (AISD) is a school district based in the city of Austin, Texas, United States. Established in 1881, the district serves most of the City of Austin and surrounding towns, the City of Sunset Valley, the Village of San Leanna, and unincorporated areas in Travis County (including Manchaca). The district operates 125 schools including 78 elementary schools, 19 middle schools, and 17 high schools. As of 2013, AISD covers 54.1% of the city of Austin.