For the 2026 school year, there are 3 public schools serving 698 students in Clinton County R-III School District. This district's average testing ranking is 3/10, which is in the bottom 50% of public schools in Missouri.
Public Schools in Clinton County R-III School District have an average math proficiency score of 34% (versus the Missouri public school average of 41%), and reading proficiency score of 30% (versus the 43% statewide average).
Minority enrollment is 18% of the student body (majority Hispanic), which is less than the Missouri public school average of 33% (majority Black).
Overview
This School District
This State (MO)
# Schools
3 Schools
2,458 Schools
# Students
698 Students
885,249 Students
# Teachers
62 Teachers
70,228 Teachers
Student-Teacher Ratio
11:1
11:1
Student By Grade
District Rank
Clinton County R-III School District, which is ranked within the bottom 50% of all 553 school districts in Missouri (based off of combined math and reading proficiency testing data) for the 2022-2023 school year.
The school district's graduation rate of 80-89% has decreased from 90% over five school years.
Overall District Rank
#422 out of 555 school districts
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
34%
40%
Reading/Language Arts Test Scores (% Proficient)
29%
43%
Science Test Scores (% Proficient)
15-19%
38%
Graduation Rate
(21-22)80-89%
90%
Chronically Absent Students
(2022-23)12.8%
20.5%
Students by Ethnicity:
Diversity Score
0.31
0.52
% American Indian
n/a
n/a
% Asian
1%
2%
% Hispanic
3%
9%
% Black
1%
15%
% White
82%
67%
% Hawaiian
1%
1%
% Two or more races
12%
6%
All Ethnic Groups
District Revenue and Spending
The revenue/student of $13,659 in this school district is less than the state median of $15,190. The school district revenue/student has stayed relatively flat over four school years.
The school district's spending/student of $17,968 is higher than the state median of $14,009. The school district spending/student has declined by 5% over four school years.
Total Revenue
$10 MM
$13,447 MM
Spending
$13 MM
$12,401 MM
Revenue / Student
$13,659
$15,190
Spending / Student
$17,968
$14,009
Best Clinton County R-III School District Public Schools (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Plattsburg High School
(Math: 40-49% | Reading: 30-39%)
Rank:
Rank:
5/
Bottom 50%10
800 W Frost St
Plattsburg, MO 64477
(816) 539-2184
Plattsburg, MO 64477
(816) 539-2184
Gr: 9-12 | 200 students Student-teacher ratio: 11:1 Minority enrollment: 23%
Rank: #22.
Ellis Elementary School
(Math: 35-39% | Reading: 30-34%)
Rank:
Rank:
4/
Bottom 50%10
603 W Frost St
Plattsburg, MO 64477
(816) 539-2187
Plattsburg, MO 64477
(816) 539-2187
Gr: PK-4 | 301 students Student-teacher ratio: 12:1 Minority enrollment: 15%
Rank: #33.
Clinton Co. R-iii Middle School
(Math: 25-29% | Reading: 25-29%)
Rank:
Rank:
2/
Bottom 50%10
800 W Frost St
Plattsburg, MO 64477
(816) 539-3920
Plattsburg, MO 64477
(816) 539-3920
Gr: 5-8 | 197 students Student-teacher ratio: 12:1 Minority enrollment: 17%
Frequently Asked Questions
How many schools belong to Clinton County R-III School District?
Clinton County R-III School District manages 3 public schools serving 698 students.
What is the rank of Clinton County R-III School District?
Clinton County R-III School District is ranked #415 out of 553 school districts in Missouri (bottom 50%) based off of combined math and reading proficiency testing data for the 2022-2023 school year.
What is the racial composition of students in Clinton County R-III School District?
82% of Clinton County R-III School District students are White, 12% of students are Two or more races, 3% of students are Hispanic, 1% of students are Asian, 1% of students are Black, and 1% of students are Hawaiian.
What is the student/teacher ratio of Clinton County R-III School District?
Clinton County R-III School District has a student/teacher ratio of 11:1, which is lower than the Missouri state average of 13:1.
What is Clinton County R-III School District's spending/student ratio?
The school district's spending/student of $17,968 is higher than the state median of $14,009. The school district spending/student has declined by 5% over four school years.
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