Back to 100 percent in-person instruction for 2021-2022
Students seen working in innovation lab
Competitive academic, sports and extracurriculars
Football team seen scrimmaging
Creating a culture of learning by doing
ophthalmology students seen practicing on eye-exam equipment
Setting students up for success in a competitive and evolving world
Students part of the dental program seen working on dental demonstrations

Our Schools

Free Bus Transportation

Students come from three Rio Grande Valley Counties: 

Cameron, Hidalgo and Willacy

Area of 3,643 miles

Hidalgo Edinburg Mercedes Willacy Cameron San Benito Olmito
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510 S. Sugar Rd., Edinburg, TX 78539

(956) 383-1684

900 Med High Dr., Mercedes, TX 78570

(956) 565-4620

151 S. Helen Moore Rd., San Benito, TX 78586

(956) 399-4358

724 S. Sugar Rd., Edinburg, TX 78539

(956) 381-5522

10650 North Expressway 77/83, Olmito, TX 78575

(956) 214-6100

700 Med High Dr., Mercedes, TX 78570

(956) 565-2237

South Texas ISD at a Glance

best places to teach in Texas 

Best Teachers in Texas 

school district in Texas 

of STISD graduates attend college/university | 1%: Military 

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STISD Science Academy, 900 Med High Dr., Mercedes