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Missouri
Division of Youth Service
Sierra-Osage Treatment Center.

Division of Youth Service

Sierra-Osage Treatment Center.

Poplar Bluff, Missouri

20 students

High School, Grades 5–12

(573)840-9717

#131

Best Student:Teacher Ratio in Missouri

20

Students

10:1

S:T Ratio

School Snapshot
Key metrics at a glance
Student-Teacher Ratio

10:1

A+

students per teacher
Excellent
This Week at Sierra-Osage Treatment Center. – July 26, 2026

16 students practicing on Varsity Tutors

SAT Prep

1

A

B

C

D

2

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B

C

D

3

A

B

C

D

4

A

B

C

D

5

A

B

C

D

1520

0

students

Start practicing →
ACT Prep

36

ENG

MATH

READ

SCI

0

students

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Math

0

students

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English

0

students

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Science

0

students

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Explore practice resources for Sierra-Osage Treatment Center. students
Academic Grades

Select a grade level to explore courses and resources

5
Grade
6
Grade
7
Grade
8
Grade
9
Grade
10
Grade
11
Grade
12
Grade
Academic Resources

Typical courses and practice resources for students at Sierra-Osage Treatment Center.

Biology
9

Cell biology, genetics, evolution, and ecology

AP Biology
AP

College-level biology with lab component

Chemistry
9

Atomic structure, reactions, and stoichiometry

AP Chemistry
AP

College-level chemistry with lab component

Physics
9

Mechanics, waves, electricity, and magnetism

AP Physics 1
AP

Algebra-based mechanics and waves

Environmental Science
9

Ecosystems, human impact, and sustainability

AP Environmental Science
AP

College-level environmental science

World History
9

Global civilizations from ancient to modern times

AP World History
AP

College-level world history analysis

U.S. History
9

American history from colonization to present

AP U.S. History
AP

College-level American history

Standardized Test Dates

Upcoming national, state, and school calendar dates that affect students at Sierra-Osage Treatment Center..

National Tests

August 7, 2026

SAT — National

Registration deadline

August 11, 2026

SAT — National

Late registration deadline

August 14, 2026

ACT — National

Registration deadline

August 22, 2026

SAT — National

Test date

August 28, 2026

SAT — National

Registration deadline

September 1, 2026

ACT — National

Late registration deadline
+63 more national tests this school year

State Assessments

September 14, 2026 – December 18, 2026

MAP-Alternate Assessment — MAP-A

Testing window
MO

February 1, 2027 – May 21, 2027

MAP-Alternate Assessment — MAP-A

Testing window
MO
See the full national test & school calendar
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SAT Prep

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ACT Prep

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Study Coach

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1:1 Tutoring

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Live Classes

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Practice Hub

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School Details
Address

9200 Sierra Osage Circle, Poplar Bluff, MO 63901

Phone

(573)840-9717

District

Division of Youth Service

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