South Texas ISD Science Academy
#44
Best ACT in Texas High Schools
795
Students
13.4:1
S:T Ratio
School Snapshot
Key metrics at a glance1,270
A-
28
A
22
A+
85%
A
13:1
A-
95%
A+
90%
A+
64%
B+
This Week at South Texas ISD Science Academy – August 19, 2026
102 students practicing on Varsity Tutors
Academic Resources
Typical courses and practice resources for students at South Texas ISD Science Academy
Standardized Test Dates
Upcoming national, state, and school calendar dates that affect students at South Texas ISD Science Academy.
National Tests
August 1, 2026 – November 30, 2026
ISEE — Fall Testing Season
August 3, 2026 – June 30, 2027
SSAT — Flex Testing
August 22, 2026
SAT — National
August 28, 2026
SAT — National
September 1, 2026
ACT — National
September 1, 2026
SAT — National
State Assessments
November 30, 2026 – December 11, 2026
STAAR — Fall EOC
February 15, 2027 – March 26, 2027
TELPAS
February 15, 2027 – March 26, 2027
TELPAS Alternate
March 15, 2027 – April 16, 2027
STAAR — Alternate 2
March 15, 2027 – April 16, 2027
STAAR Alternate 2
April 5, 2027 – April 16, 2027
STAAR — Reading Language Arts and English EOC
After South Texas ISD Science Academy
Where graduates go and what they studyUniversity of Texas - Austin
Texas A&M University
University of Texas Rio Grande Valley
Rice University
The University of Texas at San Antonio
University of Houston
Baylor University
Texas Tech University
Biology
Mechanical Engineering
Computer Science
Engineering
Bioengineering and Biomedical Engineering
Business
Electrical Engineering
Architecture
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900 Med High Dr, Mercedes, TX 78570
(956)565-4620
South Texas Independent School District