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 are 5 public elementary schools serving 1,579 students in RSU 21 School District. This district's average elementary testing ranking is 10/10, which is in the top 10% of public elementary schools in Maine.
Public Elementary Schools in RSU 21 School District have an average math proficiency score of 73% (versus the Maine public elementary school average of 51%), and reading proficiency score of 93% (versus the 84% statewide average).
Minority enrollment is 10% of the student body (majority Hispanic), which is less than the Maine public elementary school average of 15% (majority Black and Hispanic).
Overview
This School District
This State (ME)
# Schools
6 Schools
438 Schools
# Students
2,262 Students
112,312 Students
# Teachers
202 Teachers
10,362 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 Elementary Schools (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Sea Road School
(Math: 79% | Reading: 93%)
Rank:
Rank:
10/
Top 5%10
29 Sea Road
Kennebunk, ME 04043
(207) 985-1105
Kennebunk, ME 04043
(207) 985-1105
Gr: 3-5 | 308 students Student-teacher ratio: 13:1 Minority enrollment: 13%
Rank: #22.
Mildred L Day School
(Math: 75-79% | Reading: 90-94%)
Rank:
Rank:
10/
Top 5%10
600 Limerick Road
Kennebunkport, ME 04046
(207) 284-4677
Kennebunkport, ME 04046
(207) 284-4677
Gr: K-5 | 224 students Student-teacher ratio: 11:1 Minority enrollment: 12%
Rank: #33.
Kennebunk Elementary School
(Math: 70-74% | Reading: 70-74% )
Rank:
Rank:
10/
Top 5%10
177 Alewive Road
Kennebunk, ME 04043
(207) 985-4402
Kennebunk, ME 04043
(207) 985-4402
Gr: PK-2 | 378 students Student-teacher ratio: 12:1 Minority enrollment: 9%
Rank: #44.
Middle School Of The Kennebunks
(Math: 69% | Reading: 95%)
Rank:
Rank:
10/
Top 10%10
60 Thompson Road
Kennebunk, ME 04043
(207) 467-8004
Kennebunk, ME 04043
(207) 467-8004
Gr: 6-8 | 470 students Student-teacher ratio: 10:1 Minority enrollment: 8%
Rank: #55.
Kennebunkport Consolidated School
(Math: 70-74% | Reading: 85-89%)
Rank:
Rank:
9/
Top 20%10
25 School Street
Kennebunkport, ME 04046
(207) 967-2121
Kennebunkport, ME 04046
(207) 967-2121
Gr: K-5 | 199 students Student-teacher ratio: 10:1 Minority enrollment: 9%
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