Congratulations - 2002 Graduates! Garland ISD - a TEA Recognized District! Looking for Summer School Information Click here Looking for the 2002-03 GISD Calendar Click here. Located in one of the fastest growing areas of Dallas County, Garland ISD extends from the Dallas city limits, northeast to the county line and serves the communities of Garland, Rowlett, and Sachse. Currently, Garland ...