South Texas ISD Science Academy
🇺🇸 Official data · 2025Mercedes, Texas 78570 · South Texas ISD
#245 of 1,419 high schools in Texas
#3689 of 16,910 nationally
About South Texas ISD Science Academy
South Texas ISD Science Academy is a public high located in Mercedes, in the South Texas ISD school district of Texas, United States. It caters for Grades 9–12. In 2025 it enrolled 840 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 68.5 out of 100, placing it in the top 25% of high schools in United States and 245th of 1,419 ranked high schools in Texas. Its strongest component is reading proficiency (87th percentile), and its weakest is community advantage (fewer free/reduced-price lunch) (45th percentile).
Other published figures: enrollment 840.
There are 10 schools in Mercedes; South Texas ISD Science Academy ranks 1st of 9 scored schools there.
Success Index (US) breakdown
Each component is a percentile against high schools across United States.
- Math proficiency (30%)54.5%
- Reading proficiency (30%)82%
- Community advantage (fewer free/reduced-price lunch) (25%)54.8%
- Students per teacher (15%)12.9
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for South Texas ISD Science Academy by the official sources.
- Enrollment
- 840
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 54.8%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 12.9
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 82%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 54.5%
- Share of tested students proficient or above (all students, all grades).
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Schools near South Texas ISD Science Academy
Closest schools by straight-line distance, with their Success Index (US).
South Texas ISD Health Professions
Mercedes · Public high · Grades 9–12
781 students · 179 m away
John F Kennedy El
Mercedes · Public elementary · Grades PK–5
399 students · 2.2 km away
Mercedes Early Literacy Program
Mercedes · Public other · Grades PK–PK
189 students · 2.3 km away
Taylor El
Mercedes · Public elementary · Grades PK–5
406 students · 2.4 km away
A N Rico El
Weslaco · Public elementary · Grades PK–5
780 students · 3.0 km away
Weslaco East H S
Weslaco · Public high · Grades 9–12
2,066 students · 3.1 km away
Travis El
Mercedes · Public elementary · Grades PK–5
478 students · 3.2 km away
Mary Hoge Middle
Weslaco · Public middle · Grades 6–8
830 students · 3.4 km away
Airport El
Weslaco · Public elementary · Grades PK–5
786 students · 3.5 km away
Sgt William G Harrell Middle
Mercedes · Public middle · Grades 6–8
390 students · 3.7 km away
Similar schools
Public high schools in Texas with a comparable Enrollment.
Brazosport H S
Freeport · Public high · Grades 9–12
841 students
Seminole H S
Seminole · Public high · Grades 9–12
835 students
Memorial H S
San Antonio · Public high · Grades 9–12
846 students
Caddo Mills H S
Caddo Mills · Public high · Grades 9–12
833 students
Sanger H S
Sanger · Public high · Grades 9–12
827 students
Western Hills H S
Fort Worth · Public high · Grades 9–12
854 students
Frequently asked questions
Is South Texas ISD Science Academy a good school?
South Texas ISD Science Academy has a Success Index (US) of 68.5 out of 100 (Top 25% of high schools in United States) and ranks #245 of 1,419 in Texas. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does South Texas ISD Science Academy rank in Texas?
South Texas ISD Science Academy ranks #245 of 1,419 high schools in Texas and #3689 of 16,910 nationally on the Success Index (US) (2025 data).
How many students attend South Texas ISD Science Academy?
South Texas ISD Science Academy had 840 students in 2025.
Is South Texas ISD Science Academy a elementary school or a high school?
South Texas ISD Science Academy is classified as a high covering Grades 9–12. It is a public school.
What other schools are near South Texas ISD Science Academy?
There are 10 schools within 15 km of South Texas ISD Science Academy; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.