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STISD Calendar for 2026-2027

Click to Download main STISD 2026-2027 School Year Calendar (Board approved on Feb. 24, 2026)
Click to Download 2026-2027 School Year Calendar Legend (for employees)

 

STISD Board-Approved Calendar (2025-2026)

Download main STISD 2025-2026 School Year Calendar (Board approved on Feb. 18, 2025)

Download STISD 2025-2026 School Day Calendars:
2025-2026 A/B/C Academic Calendar HP, MP + SA
2025-2026 A/B Academic Calendar PA, RS + WS
* Please note: STISD Virtual Academy does not have an A/B or A/B/C schedule. All classes meet daily, Monday-Friday. Please refer to the Board Approved Main 2025-2026 School Year Calendar listed above for holidays, instructional periods, testing dates, etc.) 

Download STISD 2025-2026 School Calendar Legend (for employees)

 

District + Campus Event Calendars

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August 2026
Monday Tuesday Wednesday Thursday Friday Sat/Sun
Monday, July 27
South Texas ISD Health Professions Sports Volleyball Tryouts: Lady Mustangs
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Health Professions
South Texas ISD Science Academy Sports Volleyball Tryouts: Lady Dragons (Girls)
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Science Academy
Tuesday, July 28
South Texas ISD Health Professions Sports Volleyball Tryouts: Mustangs
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Health Professions
South Texas ISD Science Academy Sports Volleyball Tryouts: Dragons (Boys)
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Science Academy
Wednesday, July 29
South Texas ISD Health Professions Sports Flag Football Tryouts: Mustangs
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Health Professions
Thursday, July 30
Friday, July 31
South Texas ISD Medical Professions Sports Cross Country Tryouts
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Medical Professions
South Texas ISD Medical Professions Sports Flag Football Tryouts
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Medical Professions
South Texas ISD Medical Professions Sports Volleyball Tryouts
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Medical Professions
Saturday, August 1
Sunday, August 2
Monday, August 3
Tuesday, August 4
South Texas ISD Back-2-School Kick-Off (HP, MP, WS)
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Health Professions, Medical Professions, World Scholars
South Texas ISD Meeting of the STISD Board of Directors
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STISD Central Office Teaching and Learning Center (7001 E. Expressway 83, Mercedes)
Wednesday, August 5
South Texas ISD Back-2-School Kick-Off (PA, RSA)
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Preparatory Academy, Rising Scholars Academy
Thursday, August 6
South Texas ISD Back-2-School Kick-Off (SA, VA)
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Science Academy, Virtual Academy
Friday, August 7
Saturday, August 8
Sunday, August 9
Monday, August 10
Tuesday, August 11
Wednesday, August 12
South Texas ISD Science Academy Sports Cross Country Tryouts - Day 1 (Boys and Girls)
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Science Academy
South Texas ISD Health Professions Sports Cross Country Tryouts
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Health Professions
Thursday, August 13
South Texas ISD Health Professions Sports Cross Country Tryouts - Day 2
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Health Professions
South Texas ISD Science Academy Sports Cross Country Tryouts - Day 2 (Boys and Girls)
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Science Academy
South Texas ISD Science Academy Sports Flag Football Tryouts
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Science Academy
Friday, August 14
Saturday, August 15
South Texas ISD Back-2-School Kick-Off - Makeup Session (HP, MP, PA, RSA, SA, VA)
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HP, MP, PA, RSA, SA, VA
South Texas ISD Back-2-School Kick-Off - Makeup Session (WS only)
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WS
Sunday, August 16
Monday, August 17
South Texas ISD World Scholars Sports Girls Volleyball Tryouts - Day 1
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World Scholars
South Texas ISD Rising Scholars Athletics Flag Football Tryouts - 8th Grade
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RSA
South Texas ISD Rising Scholars Athletics Volleyball Tryouts - 8th Grade
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RSA
South Texas ISD Preparatory Academy Sports Volleyball Tryouts - 6th Grade
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Preparatory Academy
South Texas ISD Preparatory Academy Sports Flag Football Tryouts - 6th Grade
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Preparatory Academy
South Texas ISD World Scholars Sports Cross Country Tryouts
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World Scholars
Tuesday, August 18
South Texas ISD Rising Scholars Athletics Flag Football Tryouts - 7th Grade
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RSA
South Texas ISD World Scholars Sports Girls Volleyball Tryouts - Day 2
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World Scholars
South Texas ISD World Scholars Sports Flag Football Tryouts - Day 1
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World Scholars
South Texas ISD Preparatory Academy Sports Flag Football Tryouts - 7th Grade
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Preparatory Academy
South Texas ISD Preparatory Academy Sports Volleyball Tryouts - 7th Grade
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Preparatory Academy
South Texas ISD Rising Scholars Athletics Volleyball Tryouts - 7th Grade
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RSA
Wednesday, August 19
South Texas ISD World Scholars Sports Boys Volleyball Tryouts - Day 1
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World Scholars
South Texas ISD Rising Scholars Athletics Volleyball Tryouts - 6th Grade
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RSA
South Texas ISD Preparatory Academy Sports Flag Football Tryouts - 8th Grade
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Preparatory Academy
South Texas ISD World Scholars Sports Flag Football Tryouts - Day 2
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World Scholars
South Texas ISD Rising Scholars Athletics Flag Football Tryouts - 6th Grade
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RSA
South Texas ISD Preparatory Academy Sports Volleyball Tryouts - 8th Grade
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Preparatory Academy
Thursday, August 20
South Texas ISD World Scholars Sports Boys Volleyball Tryouts - Day 2
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World Scholars
South Texas ISD Rising Scholars Athletics Volleyball Tryouts - Invitationals
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RSA
South Texas ISD Rising Scholars Athletics Flag Football Tryouts - Invitationals
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RSA
South Texas ISD Preparatory Academy Sports Flag Football Tryouts - Makeups/Callbacks
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Preparatory Academy
South Texas ISD Preparatory Academy Sports Volleyball Tryouts - Makeups/Callbacks
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Preparatory Academy
Friday, August 21
Saturday, August 22
South Texas ISD Preparatory Academy Sports Cross Country Tryouts
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Preparatory Academy
Sunday, August 23
Monday, August 24
South Texas ISD Rising Scholars Athletics Cross Country Tryouts (All Grades)
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RSA
Tuesday, August 25
South Texas ISD Rising Scholars Athletics Cross Country Tryouts - Invitationals
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RSA
Wednesday, August 26
Thursday, August 27
Friday, August 28
Saturday, August 29
Sunday, August 30
Monday, August 31
Tuesday, September 1
Wednesday, September 2
Thursday, September 3
Friday, September 4
Saturday, September 5
Sunday, September 6

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