Islesboro Central School (Ranked Top 10% for 2026)

159 Alumni Drive
Islesboro, ME 04848

( shown in map)

10/

Top 10%

Islesboro Central School is a public K-12 school located in Islesboro, Maine, United States. It is the only school on the island.

Serving 76 students in grades Kindergarten-12, Islesboro Central School ranks in the top 10% of all schools in Maine for overall test scores (math proficiency is top 10%, and reading proficiency is top 10%).

The percentage of students achieving is 70-79% (which is higher than the Maine state average of 49%). The percentage of students achieving is ≥90% (which is higher than the Maine state average of 84%).

The student-teacher ratio of 5:1 is lower than the Maine state level of 11:1.

Minority enrollment is 4% of the student body (majority Asian), which is lower than the Maine state average of 14% (majority Black).

Quick Facts (2026)

Grades: Kindergarten-12
Enrollment: 76 students
Student-Teacher Ratio: 5:1
Minority Enrollment: 4%
: ≥50% (Btm 50% in ME)
: Top 10%
: 70-79% (Top 10%)
: ≥90% (Top 20%)
: 40-59% (Top 30%)
Source: National Center for Education Statistics (NCES), ME Dept. of Education

Top Rankings

Islesboro Central School ranks among the top 20% of public schools in Maine for:

School Overview

Islesboro Central School's student population of 76 students has declined by 19% over five school years.

The teacher population of 14 teachers has declined by 6% over five school years.

Grades Offered

Grades Kindergarten-12
(No virtual instruction)

View Data

Distribution of Students By Grade Trends
Grade	Islesboro Central School
Kind	3
1	8
2	3
3	2
4	3
5	6
6	4
7	4
8	6
9	8
10	7
11	12
12	10

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Total Students

76 students

View Data

Total Students Trends Over Years (1991-2023)
Year	Islesboro Central School
2023	82
2022	86
2021	94
2020	90
2019	90
2018	87
2017	87
2016	94
2015	95
2014	70
2013	80
2012	91
2011	90
2010	86
2009	86
2008	73
2007	86
2006	84
2005	85
2004	83
2003	97
2002	92
2001	102
2000	101
1999	103
1998	106
1997	116
1996	113
1995	124
1994	110
1993	109
1992	103
1991	98

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Gender %

Total Classroom Teachers

14 teachers

View Data

Total Classroom Teachers Trends Over Years (1987-2023)
Year	Islesboro Central School
2023	13
2022	13
2021	15
2020	15
2019	15
2018	15
2017	15
2016	15
2015	13
2014	14
2013	13
2012	13
2011	13
2010	13
2009	13
2008	14
2007	14
2006	13
2005	13
2004	14
2003	14
2002	13
2001	13
2000	13
1999	13
1998	13
1997	13
1996	13
1995	13
1994	13
1993	13
1992	12
1991	11
1990	10
1989	11
1988	10
1987	7

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Year Founded

1952

Colors

Royal blue, Silver

School Rankings

Islesboro Central School ranks within the top 10% of all 500 schools in Maine (based off of combined math and reading proficiency testing data).

The of Islesboro Central School is 0.08, which is less than the diversity score at state average of 0.26. The school's diversity has stayed relatively flat over five school years.

This School

State Level (ME)

#43 out of 500 schools
(Top 10%)

View Data

Overall School Rank Trends Over Years (2012-2023)
Year	Islesboro Central School
2023	#43
2022	#152
2021	#112
2019	#172
2018	#446
2017	#132
2016	#408
2015	#152
2014	#141
2013	#92
2012	#101

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70-79%

49%

View Data

Math Proficiency Comparison Over Years (2012-2023)
Year	Islesboro Central School	Maine	Islesboro Public Schools
2023	74%	49%	75%
2022	84%	82%	84%
2021	90%	81%	90%
2019	44%	36%	44%
2018	30%	37%	30%
2017	54%	39%	54%
2016	34%	39%	34%
2015	49%	37%	49%
2014	64%	59%	64%
2013	64%	60%	64%
2012	74%	61%	74%

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≥90%

84%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2011-2022)
Year	Islesboro Central School	Maine	Islesboro Public Schools
2022	90%	84%	90%
2021	90%	85%	90%
2019	54%	56%	54%
2018	24%	50%	30%
2017	54%	53%	54%
2016	34%	51%	34%
2015	50%	48%	50%
2014	74%	67%	74%
2013	84%	68%	84%
2012	74%	69%	74%
2011	74%	67%	74%

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40-59%

37%

Student-Teacher Ratio

5:1

11:1

View Data

Student-Teacher Ratio Comparison Over Years (1991-2023)
Year	Islesboro Central School	Maine	Islesboro Public Schools
2023	6:1	11:1	6:1
2022	7:1	11:1	7:1
2021	6:1	11:1	6:1
2020	6:1	12:1	6:1
2019	6:1	12:1	6:1
2018	6:1	12:1	6:1
2017	6:1	12:1	6:1
2016	6:1	12:1	6:1
2015	7:1	12:1	7:1
2014	5:1	12:1	5:1
2013	6:1	12:1	6:1
2012	7:1	12:1	7:1
2011	7:1	12:1	7:1
2010	7:1	12:1	7:1
2009	7:1	12:1	7:1
2008	5:1	12:1	5:1
2007	6:1	12:1	6:1
2006	6:1	12:1	6:1
2005	7:1	12:1	7:1
2004	6:1	13:1	6:1
2003	7:1	13:1	7:1
2002	7:1	14:1	7:1
2001	8:1	14:1	8:1
2000	8:1	14:1	8:1
1999	8:1	15:1	8:1
1998	8:1	15:1	8:1
1997	9:1	15:1	9:1
1996	9:1	16:1	9:1
1995	10:1	15:1	10:1
1994	9:1	16:1	8:1
1993	8:1	16:1	8:1
1992	9:1	16:1	9:1
1991	9:1	16:1	9:1

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American Indian

n/a

Asian

View Data

Asian Student Percentage Comparison Over Years (2001-2023)
Year	Islesboro Central School	Maine	Islesboro Public Schools
2023	3%	1%	3%
2022	5%	2%	5%
2021	3%	1%	3%
2020	6%	1%	6%
2019	6%	1%	6%
2018	6%	1%	6%
2017	6%	1%	6%
2016	6%	2%	6%
2015	3%	1%	3%
2014	3%	2%	3%
2013	4%	2%	4%
2012	5%	2%	5%
2011	3%	2%	3%
2010	1%	2%	1%
2009	4%	2%	4%
2008	1%	2%	1%
2007	1%	1%	1%
2006	1%	1%	1%
2003	3%	1%	3%
2002	4%	1%	4%
2001	1%	1%	1%

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Hispanic

n/a

View Data

Hispanic Student Percentage Comparison Over Years (2001-2023)
Year	Islesboro Central School	Maine	Islesboro Public Schools
2023	1%	3%	1%
2022	1%	3%	1%
2020	1%	2%	1%
2019	1%	2%	1%
2018	1%	2%	1%
2017	1%	2%	1%
2009	1%	1%	1%
2004	1%	1%	1%
2003	2%	1%	2%
2002	3%	1%	3%
2001	1%	1%	1%

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Black

View Data

Black Student Percentage Comparison Over Years (1996-2023)
Year	Islesboro Central School	Maine	Islesboro Public Schools
2023	1%	5%	1%
2020	2%	4%	2%
2019	2%	4%	2%
2018	4%	4%	4%
2017	4%	4%	4%
2016	3%	3%	3%
2015	4%	3%	4%
2014	6%	3%	6%
2013	5%	3%	5%
2012	4%	3%	4%
2011	3%	2%	3%
2010	2%	3%	2%
2007	1%	2%	1%
1997	2%	1%	2%
1996	2%	1%	2%

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White

96%

86%

View Data

White Student Percentage Comparison Over Years (1996-2023)
Year	Islesboro Central School	Maine	Islesboro Public Schools
2023	94%	87%	94%
2022	92%	87%	92%
2021	94%	88%	94%
2020	87%	89%	87%
2019	87%	89%	87%
2018	87%	90%	87%
2017	87%	90%	87%
2016	88%	90%	88%
2015	91%	91%	91%
2014	89%	91%	89%
2013	89%	92%	89%
2012	91%	92%	91%
2011	94%	92%	94%
2010	97%	93%	97%
2009	95%	93%	95%
2008	99%	93%	99%
2007	98%	95%	98%
2006	99%	96%	99%
2005	100%	95%	100%
2004	99%	95%	99%
2003	95%	95%	95%
2002	93%	96%	93%
2001	98%	96%	98%
2000	98%	96%	98%
1999	100%	97%	100%
1998	97%	97%	97%
1997	98%	97%	98%
1996	96%	97%	96%

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Hawaiian

n/a

Two or more races

View Data

Two or More Races Student Percentage Comparison Over Years (2016-2023)
Year	Islesboro Central School	Maine	Islesboro Public Schools
2023	1%	3%	1%
2022	2%	3%	2%
2021	2%	3%	2%
2020	2%	3%	2%
2019	2%	3%	2%
2016	1%	2%	1%

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All Ethnic Groups

0.08

0.26

View Data

Diversity Score Comparison Over Years (1996-2023)
Year	Islesboro Central School	Maine	Islesboro Public Schools
2023	0.12	0.24	0.12
2022	0.15	0.24	0.15
2021	0.12	0.22	0.12
2020	0.24	0.21	0.24
2019	0.24	0.21	0.24
2018	0.24	0.19	0.24
2017	0.24	0.19	0.24
2016	0.22	0.19	0.22
2015	0.17	0.17	0.17
2014	0.21	0.18	0.21
2013	0.22	0.16	0.21
2012	0.17	0.16	0.17
2011	0.12	0.15	0.12
2010	0.06	0.13	0.06
2009	0.10	0.13	0.10
2008	0.02	0.13	0.02
2007	0.04	0.10	0.04
2004	0.02	0.09	0.02
2003	0.10	0.09	0.10
2002	0.13	0.08	0.13
2001	0.05	0.07	0.04
2000	0.04	0.07	0.04
1998	0.06	0.05	0.06
1997	0.04	0.05	0.04
1996	0.08	0.05	0.08

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≥50%

86%

View Data

Graduation Rate Comparison Over Years (2012-2023)
Year	Islesboro Central School	Maine	Islesboro Public Schools
2023	50%	86%
2022	50%	86%
2021	50%	84%	50%
2020	50%	85%	50%
2018	50%	84%	50%
2017	50%	85%	50%
2016	50%	85%	50%
2015	50%	86%	50%
2014	50%	85%	50%
2013	50%	85%	50%
2012	50%	84%	50%

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Participates in the

Yes

Eligible for

33%

View Data

Free Lunch Eligibility Comparison Over Years (1993-2023)
Year	Islesboro Central School	Maine	Islesboro Public Schools
2023	18%	32%	18%
2022	12%	32%	12%
2021	12%	34%	12%
2020	13%	38%	13%
2019	13%	38%	13%
2018	18%	39%	18%
2017	18%	39%	18%
2016	8%	40%	8%
2015	22%	40%	22%
2014	29%	39%	29%
2013	24%	38%	24%
2012	4%	5%	4%
2011	22%	36%	22%
2010	5%	34%	5%
2009	5%	31%	5%
2008	11%	29%	11%
2007	12%	27%	12%
2006	15%	27%	15%
2005	13%	25%	13%
2004	4%	23%	4%
2003	3%	23%	3%
2002	7%	22%	7%
2001	12%	21%	12%
2000	14%	23%	14%
1999	15%	24%	15%
1998	21%	23%	21%
1997	16%	24%	16%
1996	18%	23%	18%
1995	11%	23%	11%
1994	17%	23%	17%
1993	15%	23%	15%

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Eligible for (20-21)

12%

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (1999-2021)
Year	Islesboro Central School	Maine	Islesboro Public Schools
2021	12%	6%	12%
2020	6%	6%	6%
2019	6%	6%	6%
2018	2%	7%	2%
2017	2%	7%	2%
2015	10%	7%	10%
2014	11%	7%	11%
2013	9%	7%	9%
2011	7%	7%	7%
2010	6%	7%	6%
2009	7%	7%	7%
2008	7%	7%	7%
2007	14%	7%	14%
2006	2%	7%	2%
2005	9%	7%	9%
2004	5%	7%	5%
2003	6%	8%	6%
2002	4%	8%	4%
2001	5%	8%	5%
2000	9%	7%	9%
1999	3%	8%	3%

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School Statewide Testing

School District Name

Islesboro Public Schools

Source: National Center for Education Statistics (NCES), ME Dept. of Education

School Notes

School Mascot: Islesboro Islander

Profile last updated: 02/09/2025

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Frequently Asked Questions

What is Islesboro Central School's ranking?

Islesboro Central School is ranked #43 out of 500 schools, which ranks it among the top 10% of public schools in Maine.

What percent of students have achieved state testing proficiency in math and reading?

70-79% of students have achieved math proficiency (compared to the 49% ME state average), while ≥90% of students have achieved reading proficiency (compared to the 84% ME state average).

What is the graduation rate of Islesboro Central School?

The graduation rate of Islesboro Central School is 50%, which is lower than the Maine state average of 86%.

How many students attend Islesboro Central School?

76 students attend Islesboro Central School.

What is the racial composition of the student body?

96% of Islesboro Central School students are White, 2% of students are Asian, 1% of students are Black, and 1% of students are Two or more races.

What is the student-teacher ratio of Islesboro Central School?

Islesboro Central School has a student ration of 5:1, which is lower than the Maine state average of 11:1.

What grades does Islesboro Central School offer ?

Islesboro Central School offers enrollment in grades Kindergarten-12 (No virtual instruction).

What school district is Islesboro Central School part of?

Islesboro Central School is part of Islesboro Public Schools.

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