Southside High School

Southside Independent School District

San Antonio, Texas

1,685 students

High School, Grades 9–12

(210)882-1606 School Website

1,685

Students

16.8:1

S:T Ratio

School Snapshot

Key metrics at a glance

Avg SAT Score

1,020

out of 1600

Average

Avg ACT Score

out of 36

Average

AP Courses

A-

courses offered

Good

AP Enrollment

19%

of students

Average

Student-Teacher Ratio

17:1

students per teacher

Average

Graduation Rate

92%

A+

Excellent

Reading Proficiency

42%

B-

Average

Math Proficiency

13%

Below Avg

This Week at Southside – August 24, 2026

217 students practicing on Varsity Tutors

SAT Prep

1520

students

Start practicing →

ACT Prep

ENG

MATH

READ

SCI

students

Start practicing →

Math

students

Start practicing →

English

students

Start practicing →

Science

students

Start practicing →

Explore practice resources for Southside students

Academic Grades

Select a grade level to explore courses and resources

Academic Resources

Typical courses and practice resources for students at Southside High School

Biology

Cell biology, genetics, evolution, and ecology

AP Biology

College-level biology with lab component

Chemistry

Atomic structure, reactions, and stoichiometry

AP Chemistry

College-level chemistry with lab component

Physics

Mechanics, waves, electricity, and magnetism

AP Physics 1

Algebra-based mechanics and waves

Environmental Science

Ecosystems, human impact, and sustainability

AP Environmental Science

College-level environmental science

World History

Global civilizations from ancient to modern times

AP World History

College-level world history analysis

U.S. History

American history from colonization to present

AP U.S. History

College-level American history

Standardized Test Dates

Upcoming national, state, and school calendar dates that affect students at Southside High School.

National Tests

August 1, 2026 – November 30, 2026

ISEE — Fall Testing Season

Testing window

August 3, 2026 – June 30, 2027

SSAT — Flex Testing

Testing window

August 28, 2026

SAT — National

Registration deadline

September 1, 2026

ACT — National

Late registration deadline

September 1, 2026

SAT — National

Late registration deadline

September 4, 2026

SAT — National

Score release

+75 more national tests this school year

State Assessments

November 30, 2026 – December 11, 2026

STAAR — Fall EOC

Testing window

February 15, 2027 – March 26, 2027

TELPAS

Testing window

February 15, 2027 – March 26, 2027

TELPAS Alternate

Testing window

March 15, 2027 – April 16, 2027

STAAR — Alternate 2

Testing window

March 15, 2027 – April 16, 2027

STAAR Alternate 2

Testing window

April 5, 2027 – April 16, 2027

STAAR — Reading Language Arts and English EOC

Testing window

+4 more state assessments this school year

See the full national test & school calendar

After Southside High

Where graduates go and what they study

Popular Colleges

The University of Texas at San Antonio

University of the Incarnate Word

Texas A&M University

University of Texas - Austin

Texas State University

Palo Alto College

Texas A&M University - Corpus Christi

Texas A&M University-San Antonio

Popular Majors

Biology

Nursing

Business

Psychology

Pre-Medicine Studies

Kinesiology and Exercise Science

Criminal Justice and Law Enforcement Administration

Criminology

Varsity Tutors

Unlock Academic Success

Personalized learning support for Southside High School learners

SAT Prep

Practice tests, flashcards, and AI-powered study tools

ACT Prep

Master all four sections with targeted practice

Study Coach

Get instant help with homework and practice problems 24/7

1:1 Tutoring

Match with expert tutors in San Antonio

Live Classes

Join interactive group sessions with expert instructors

Practice Hub

Thousands of flashcards and learning resources

School Details

Address

19190 Us 281 S 2, San Antonio, TX 78221

Phone

(210)882-1606

Website

Visit Website

District

Southside Independent School District

Teachers & Staff

Need Academic Help?

Get matched with expert tutors for any subject

Find a Tutor

Other Schools in District

Heritage Elementary

Losoya Middle

Southside Alter Center

Julius L Matthey Middle

Freedom Elementary

Julian C Gallardo Elementary