Introductory Career & Technical Education (CTE) Courses in 6 Career Clusters
Excellence Beyond Textbooks — Stars in Academics & Fine Arts
2025-2028 Apple Distinguished School for inspiring, imagining and impacting teaching and learning schoolwide through innovation
Competitive academic, sports and extracurriculars

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

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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

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Serving STISD's tri-county area | 956.260.2200

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Welcome to STISD's seventh and newest campus, an all-virtual learning option for RGV

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Preparatory Academy at a Glance

Best Middle School in Texas 

TEA Accountability Rating 

Champs in competitive sports 

available high school credits can be earned 

South Texas ISD Board of Trustees Names Finalist for Superintendent

The South Texas Independent School District (STISD) Board of Trustees, at its April 7 meeting, named Dr. Sandra Garza Ochoa, from Edcouch Elsa ISD, as finalist for superintendent. By law, the Board must now wait 21 days before voting to hire Ochoa to be the new superintendent for South Texas ISD. Ochoa is slated to be the successor to superintendent Dr. Marco Antonio Lara, Jr., who is retiring on May 31 of this year.

Read More about South Texas ISD Board of Trustees Names Finalist for Superintendent
STISD Tri-County Special Education Cooperative hosting “Growing Together” Autism Support Conference

STISD families are invited to attend “Growing Together,” a parent conference on autism taking place April 25, 2026, in Mercedes. The event will offer practical strategies, community resources, and opportunities to connect with other families and support organizations.

Read More about STISD Tri-County Special Education Cooperative hosting “Growing Together” Autism Support Conference

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