South Texas ISD

  • Education
100 Med High Dr.
Mercedes, TX 78570-9702
(956) 514-4255
(956) 565-9129 (fax)
District/campus offices are open M-Th 8:00 a.m. to 5:00 p.m. and F from 8:00 a.m. to 4:00 p.m.
  • About

    The only all-magnet school district in the state, STISD offers Valley students with an educational alternative. STISD schools serve junior high and high school students in the Rio Grande Valley.