Mission Collegiate High School

Mission CISD

Alton, Texas

438 students

High School, Grades 9–12

(956)323-6120 School Website

438

Students

14.4:1

S:T Ratio

School Snapshot

Key metrics at a glance

Avg SAT Score

1,100

B+

out of 1600

Good

Avg ACT Score

B+

out of 36

Good

AP Courses

A-

courses offered

Good

AP Enrollment

62%

B+

of students

Excellent

Student-Teacher Ratio

14:1

B+

students per teacher

Good

Graduation Rate

95%

A+

Excellent

Reading Proficiency

85%

Excellent

Math Proficiency

54%

Average

This Week at Mission Collegiate – August 24, 2026

52 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 Mission Collegiate students

Academic Grades

Select a grade level to explore courses and resources

Academic Resources

Typical courses and practice resources for students at Mission Collegiate 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 Mission Collegiate 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 Mission Collegiate High

Where graduates go and what they study

Popular Colleges

University of Texas Rio Grande Valley

Texas A&M University

University of Texas - Austin

South Texas College

Texas State University

Baylor University

The University of Texas at San Antonio

Texas A&M University - Corpus Christi

Popular Majors

Biology

Nursing

Criminal Justice and Law Enforcement Administration

Psychology

Business

Computer Science

Mechanical Engineering

Education

Varsity Tutors

Unlock Academic Success

Personalized learning support for Mission Collegiate 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 Alton

Live Classes

Join interactive group sessions with expert instructors

Practice Hub

Thousands of flashcards and learning resources

School Details

Address

605 S Los Ebanos Rd, Alton, TX 78573

Phone

(956)323-6120

Website

Visit Website

District

Mission CISD

Need Academic Help?

Get matched with expert tutors for any subject

Find a Tutor

Other Schools in District

Mission High School

Veterans Memorial High School