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St. Clair County

Missouri · Public K-12

St. Clair County hosts 7 public K-12 schools. Together they educate about 1,338 Missouri students across 4 elementary and 3 high.

4-year change in St. Clair County

SY 2020-21 vs SY 2024-25
Total enrollment
1,338
+26 (+2%) vs SY 2020-21
School count
7
0 (0%) vs SY 2020-21
Source: NCES Common Core of Data, enrollment-weighted demographic averages

How St. Clair County ranks

Among counties
MeasureThis countyIn MissouriIn the US
State test proficiency
ranked highest first
29.9%#93 of 100N/A
Enrollment
ranked largest first
1,338#91 of 101#2,559 of 2,745
Number of schools
ranked most first
7#89 of 101N/A
Students per teacher
ranked fewest first
11.2:1#27 of 101#341 of 2,655
Free or reduced-price lunch share
ranked highest first
56.8%#39 of 101#1,259 of 2,526
Diversity index
ranked most diverse first
15.7%#59 of 99#2,315 of 2,707
Counties need at least 3 schools and 1,000 students to be ranked. Test proficiency is ranked within the state only, since each state gives a different test. Each rank links to the full list.
Residents
9,587
all ages · ACS 5-yr
Schools
7
4 districts
Enrollment
1,338
students · NCES CCD
Median income
$53,043
Below Missouri avg
Free/reduced lunch
56.8%
Above Missouri avg
Elementary
4
750 students
Middle
0
schools
High
3
588 students
Combined / other
0
schools
LARGEST DISTRICT
OSCEOLA
563 students · 4 districts in St. Clair County

County vs. school enrollment demographics

Left bar is the racial makeup of St. Clair County residents (Census ACS 5-year). Right bar is the enrollment-weighted makeup of public schools in the county (NCES CCD). NCES systematically under-reports Hispanic, Pacific Islander, and Native American enrollment for many schools; where the resident share is meaningful but the reported school share is zero, we mark the school bar "not reported".

County residents
White
94%
Hispanic
2%
Black
1%
Asian
0%
Two or more
5%
Native American
0%
Pacific Islander
0%
School enrollment
White
92%
Hispanic
4%
Black
1%
Asian
0%
Two or more
1%
Native American
1%
Pacific Islander
0%
Bachelor's+
14.7%
adults 25+
Poverty rate
11.6%
ACS 5-year
Unemployment
3.3%
civilian labor
Median age
46
21.3% under 18

Test scores in St. Clair County

Latest 2024-25 ELA proficiency, 6 schools ranked. Missouri state average: 44.9%.

Top 5 schools (ELA)
  1. OSCEOLA ELEM.· 38.6%
  2. APPLETON CITY ELEM.· 37.0%
  3. OSCEOLA JR.-SR. HIGH· 34.2%
  4. LAKELAND ELEM.· 31.8%
  5. APPLETON CITY HIGH· 31.6%
Lowest 5 schools (ELA)
  1. LAKELAND HIGH· 20.8%
  2. APPLETON CITY HIGH· 31.6%
  3. LAKELAND ELEM.· 31.8%
  4. OSCEOLA JR.-SR. HIGH· 34.2%
  5. APPLETON CITY ELEM.· 37.0%

See all 6 schools in St. Clair County ranked by score →

All schools (7)

LargestA-ZTop rated
NameCityLevelGradesEnrollmentRating
OSCEOLA ELEM.OsceolaElementaryPK-06325·
OSCEOLA JR.-SR. HIGHOsceolaHigh07-12238·
LAKELAND ELEM.DeepwaterElementaryPK-06223·
LAKELAND HIGHDeepwaterHigh07-12180·
APPLETON CITY HIGHAppleton CityHigh07-12170·
APPLETON CITY ELEM.Appleton CityElementaryPK-06161·
Roscoe ElementaryOsceolaElementaryPK-0841·

Cities in St. Clair County

Appleton City2 schoolsDeepwater2 schoolsOsceola2 schoolsOsceola1 school

About St. Clair County

St. Clair County is a low-population county of about 9,587 residents in Missouri. Its public-school system serves approximately 1,338 students across 7 schools.

Looking at the wider area, census numbers show the median household earns about $53,043 a year, roughly 15% of adults have completed at least a four-year degree, and the poverty rate is around 12%. That income level is 13% below the Missouri median.

Looking at the level breakdown, St. Clair County is built around 4 elementary schools (750 students), and 3 high schools (588).

OSCEOLA is the biggest district by enrollment, covering about 563 students across St. Clair County.

Over the past 4-year window. Total public-school enrollment in St. Clair County has remained close to its prior level since SY 2020-21, moving from about 1,312 students to 1,338.

Within the allk12 community for this area, the community for St. Clair County discusses sports rivalries, cross-district programs, and shared facilities. Discussions cut across districts, schools, and grade levels.

Frequently asked questions

How many public schools are in St. Clair County?
St. Clair County, Missouri has 7 public K-12 schools serving approximately 1,338 students.
How many high schools are in St. Clair County?
St. Clair County, Missouri has 3 public high schools, serving approximately 588 students.
How many elementary schools are in St. Clair County?
St. Clair County, Missouri has 4 public elementary schools, serving approximately 750 students.
What is the largest school district in St. Clair County?
OSCEOLA is the largest school district in St. Clair County, serving approximately 563 students. The county contains 4 school districts overall.
How many people live in St. Clair County?
St. Clair County has roughly 9,587 residents according to the latest Census ACS 5-year estimate.
What is the median household income in St. Clair County?
Median household income in St. Clair County is $53,043, below the Missouri average of $61,285. About 11.6% of residents live below the federal poverty line.
How educated are residents of St. Clair County?
Approximately 14.7% of adults 25 and older in St. Clair County hold a bachelor's degree or higher, according to the Census ACS 5-year estimate.
What share of students in St. Clair County qualify for free or reduced lunch?
Roughly 56.8% of students in St. Clair County public schools qualify for free or reduced-price lunch, a common proxy for low-income enrollment. This is higher than the Missouri county average of 54.0%.
What is the student-teacher ratio in St. Clair County schools?
Across St. Clair County public schools, the enrollment-weighted student-teacher ratio is approximately 11.5 to 1.
What is the racial makeup of St. Clair County?
St. Clair County residents are approximately 94% White, 2% Hispanic, 1% Black, 0% Asian, 5% two or more races according to the Census ACS 5-year estimate.
DATA · Census ACS 5-year · NCES Common Core of Data