Sam Houston, AISD's second high school, opened in the eastern part of Arlington in the Fall of 1963.

The original boundary between Houston and Arlington High School was described by Cathy Brown of The Dallas Morning News as "a north/south zig zag.

"[2] The boundary extended from a point near the intersection of Cooper at Mansfield northward to Arkansas Lane.

[2] In 1970, Lamar High School opened, relieving some of the overcrowding at Arlington and Sam Houston.

[2] Duff, Hill, Swift, South Davis, and a portion of Dunn Elementaries feed into Bailey Jr. High.