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 2026 school year, there is 1 public high school serving 683 students in RSU 21 School District. This district's average high testing ranking is 8/10, which is in the top 30% of public high schools in Maine.
Public High School in RSU 21 School District have an average math proficiency score of 52% (versus the Maine public high school average of 42%), and reading proficiency score of 82% (versus the 83% statewide average).
Public High School in RSU 21 School District have a Graduation Rate of 92%, which is more than the Maine average of 86%.
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 8% of the student body (majority Hispanic and Asian), which is less than the Maine public high school average of 15% (majority Black and Hispanic).
Overview
This School District
This State (ME)
# Schools
6 Schools
124 Schools
# Students
2,262 Students
53,278 Students
# Teachers
202 Teachers
4,381 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 182 school districts in Maine (based off of combined math and reading proficiency testing data) for the 2022-2023 school year.
The school district's graduation rate of 92% has decreased from 95% over five school years.
Overall District Rank
#11 out of 189 school districts
(Top 10%)
(Top 10%)
Math Test Scores (% Proficient)
70%
49%
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
0.27
% American Indian
n/a
1%
% Asian
2%
1%
% Hispanic
4%
4%
% Black
1%
5%
% White
91%
85%
% Hawaiian
n/a
n/a
% Two or more races
2%
4%
All Ethnic Groups
District Revenue and Spending
The revenue/student of $25,855 is higher than the state median of $21,739. The school district revenue/student has grown by 18% over four school years.
The school district's spending/student of $21,893 is higher than the state median of $21,327. The school district spending/student has grown by 16% over four school years.
Total Revenue
$59 MM
$3,617 MM
Spending
$50 MM
$3,549 MM
Revenue / Student
$25,855
$21,739
Spending / Student
$21,893
$21,327
Best RSU 21 School District Public High Schools (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Kennebunk High School
(Math: 50-54% | Reading: 80-84%)
Rank:
Rank:
6/
Top 50%10
89 Fletcher Street
Kennebunk, ME 04043
(207) 985-1110
Kennebunk, ME 04043
(207) 985-1110
Gr: 9-12 | 683 students Student-teacher ratio: 12:1 Minority enrollment: 8%
Recent Articles
When “Free Public School” Still Isn’t Free
Discover the hidden costs of public school in 2026, from supplies and fees to transportation, technology, and extracurricular expenses.
What a District Budget Cut Means for Your Child's School Experience
Learn how district budget cuts can affect class sizes, programs, staffing, transportation, and your child's daily school experience in 2026.
School Closure Risk: What Parents Should Check Before Moving
Learn how parents can assess school closure risk before buying or renting in a district, using enrollment, funding, and boundary data.
