Top Rankings
RSU 21 School District ranks among the top 20% of public school district in Maine for:
Category
Attribute
Overall Rank
Highest overall rank (Top 10%)
Math Proficiency
Highest math proficiency (Top 10%)
Reading/Language Arts Proficiency
Highest reading/language arts proficiency (Top 10%)
Graduation Rate
Highest graduation rate (Top 5%)
Community Size
Largest student body (number of students) (Top 1%)
For the 2025 school year, there is 1 public high school serving 707 students in RSU 21 School District. This district's average high testing ranking is 6/10, which is in the top 50% of public high schools in Maine.
High School in RSU 21 School District have an average math proficiency score of 87% (versus the Maine public high school average of 85%), and reading proficiency score of 82% (versus the 82% statewide average).
High School in RSU 21 School District have a Graduation Rate of 92%, which is more than the Maine average of 85%.
The school with highest graduation rate is Kennebunk High School, with 90-94% graduation rate. Read more about public school graduation rate statistics in Maine or national school graduation rate statistics.
Minority enrollment is 9% of the student body (majority Hispanic and Black), which is less than the Maine public high school average of 14% (majority Black and Hispanic).
Overview
This School District
This State (ME)
# Schools
6 Schools
124 Schools
# Students
2,280 Students
53,407 Students
# Teachers
203 Teachers
4,409 Teachers
Student : Teacher Ratio
11:1
11:1
Student By Grade
District Rank
RSU 21 School District, which is ranked within the top 20% of all 191 school districts in Maine (based off of combined math and reading proficiency testing data) for the 2021-2022 school year.
The school district's graduation rate of 92% has increased from 90-94% over five school years.
Overall District Rank
#19 out of 222 school districts
(Top 10%)
(Top 10%)
Math Test Scores (% Proficient)
91%
82%
Reading/Language Arts Test Scores (% Proficient)
92%
84%
Science Test Scores (% Proficient)
49%
37%
Graduation Rate
92%
86%
Students by Ethnicity:
Diversity Score
0.18
0.26
% American Indian
1%
1%
% Asian
2%
1%
% Hispanic
4%
4%
% Black
1%
5%
% White
90%
86%
% Hawaiian
n/a
n/a
% Two or more races
2%
3%
All Ethnic Groups
District Revenue and Spending
The revenue/student of $25,651 is higher than the state median of $21,600. The school district revenue/student has stayed relatively flat over four school years.
The school district's spending/student of $21,720 is higher than the state median of $21,191. The school district spending/student has stayed relatively flat over four school years.
Total Revenue
$59 MM
$3,617 MM
Spending
$50 MM
$3,549 MM
Revenue / Student
$25,651
$21,600
Spending / Student
$21,720
$21,191
Best RSU 21 School District High Schools (2025)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Grades
Students
Rank: #11.
Kennebunk High School
(Math: 85-89% | Reading: 80-84%)
Rank:
Rank:
7/
Top 50%10
89 Fletcher Street
Kennebunk, ME 04043
(207) 985-1110
Kennebunk, ME 04043
(207) 985-1110
Grades: 9-12
| 707 students
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