Island Park Elementary School (Ranked Top 1% for 2025-26)

5437 Island Crest Way
Mercer Island, WA 98040

( shown in map)

10/

Top 1%

Serving 361 students in grades Kindergarten-5, Island Park Elementary School ranks in the top 1% of all schools in Washington for overall test scores (math proficiency is top 1%, and reading proficiency is top 1%).

The percentage of students achieving is 85-89% (which is higher than the Washington state average of 41%). The percentage of students achieving is 90-94% (which is higher than the Washington state average of 53%).

The student-teacher ratio of 16:1 is equal to the Washington state level of 16:1.

Minority enrollment is 44% of the student body (majority Asian), which is lower than the Washington state average of 52% (majority Hispanic).

Quick Facts (2025-26)

Grades: Kindergarten-5
Enrollment: 361 students
Student-Teacher Ratio: 16:1
Minority Enrollment: 44%
: Top 1% in WA
: 85-89% (Top 1%)
: 90-94% (Top 1%)
: 80-89% (Top 5%)
Source: National Center for Education Statistics (NCES), WA Dept. of Education

Top Rankings

Island Park Elementary School ranks among the top 20% of public schools in Washington for:

School Overview

Island Park Elementary School's student population of 361 students has declined by 9% over five school years.

The teacher population of 23 teachers has declined by 8% over five school years.

Grades Offered

Grades Kindergarten-5
(No virtual instruction)

View Data

Distribution of Students By Grade Trends
Grade	Island Park Elementary School
Kind	44
1	61
2	73
3	69
4	54
5	60

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Total Students

361 students

View Data

Total Students Trends Over Years (1987-2023)
Year	Island Park Elementary School
2023	380
2022	378
2021	366
2020	399
2019	399
2018	388
2017	388
2016	556
2015	576
2014	562
2013	549
2012	543
2011	553
2010	521
2009	534
2008	502
2007	515
2006	520
2005	521
2004	559
2003	533
2002	549
2001	572
2000	603
1999	594
1998	595
1997	577
1996	552
1995	463
1994	367
1993	440
1992	463
1991	461
1990	435
1989	440
1988	429
1987	487

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Gender %

Total Classroom Teachers

23 teachers

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Total Classroom Teachers Trends Over Years (1990-2023)
Year	Island Park Elementary School
2023	23
2022	24
2021	26
2020	25
2019	25
2018	24
2017	24
2016	29
2015	35
2013	29
2012	30
2011	29
2010	27
2009	27
2008	27
2007	26
2006	27
2005	28
2004	29
2003	26
2002	28
2001	28
2000	28
1999	28
1998	28
1997	25
1996	23
1995	21
1994	19
1993	19
1992	20
1991	17
1990	19

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School Motto

All Learners Honored, Included, Challenged, and Empowered.

School Rankings

Island Park Elementary School ranks within the top 1% of all 2,088 schools in Washington (based off of combined math and reading proficiency testing data).

The of Island Park Elementary School is 0.62, which is less than the diversity score at state average of 0.69. The school's diversity has stayed relatively flat over five school years.

This School

State Level (WA)

#13 out of 2088 schools
(Top 1%)

View Data

Overall School Rank Trends Over Years (2012-2023)
Year	Island Park Elementary School
2023	#13
2022	#11
2021	#42
2019	#42
2018	#79
2017	#56
2016	#125
2015	#52
2014	#1116
2013	#84
2012	#62

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85-89%

41%

View Data

Math Proficiency Comparison Over Years (2011-2023)
Year	Island Park Elementary School	Washington	Mercer Island School District
2023	87%	41%	79%
2022	87%	40%	80%
2019	83%	50%	83%
2018	83%	51%	83%
2017	86%	51%	83%
2016	80%	51%	81%
2015	83%	49%	81%
2014	50%	65%	99%
2013	89%	64%	89%
2012	91%	63%	91%
2011	88%	60%	89%

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90-94%

53%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2010-2022)
Year	Island Park Elementary School	Washington	Mercer Island School District
2022	92%	53%	85%
2019	87%	61%	87%
2018	83%	61%	83%
2017	87%	61%	88%
2016	81%	62%	87%
2015	86%	56%	82%
2014	50%	74%	95%
2013	91%	73%	92%
2012	90%	72%	92%
2011	93%	70%	93%
2010	92%	70%	93%

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80-89%

49%

Student-Teacher Ratio

16:1

View Data

Student-Teacher Ratio Comparison Over Years (1990-2023)
Year	Island Park Elementary School	Washington	Mercer Island School District
2023	17:1	16:1	19:1
2022	16:1	16:1	18:1
2021	14:1	16:1	18:1
2020	16:1	17:1	18:1
2019	16:1	17:1	18:1
2018	16:1	19:1	19:1
2017	16:1	18:1	19:1
2016	19:1	19:1	20:1
2015	16:1	18:1	19:1
2013	19:1	19:1	20:1
2012	18:1	20:1	21:1
2011	19:1	19:1	21:1
2010	19:1	19:1	21:1
2009	20:1	19:1	20:1
2008	19:1	19:1	20:1
2007	20:1	19:1	20:1
2006	19:1	19:1	20:1
2005	19:1	19:1	21:1
2004	19:1	19:1	21:1
2003	21:1	19:1	21:1
2002	20:1	19:1	20:1
2001	20:1	20:1	21:1
2000	22:1	20:1	21:1
1999	21:1	21:1	21:1
1998	21:1	20:1	21:1
1997	24:1	20:1	22:1
1996	24:1	21:1	22:1
1995	22:1	20:1	21:1
1994	19:1	20:1	21:1
1993	24:1	21:1	21:1
1992	23:1	21:1	20:1
1991	27:1	21:1	23:1
1990	23:1	21:1	20:1

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American Indian

n/a

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American Indian Student Percentage Comparison Over Years (2004-2007)
Year	Island Park Elementary School	Washington	Mercer Island School District
2007	1%	4%
2004	1%	3%

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Asian

19%

View Data

Asian Student Percentage Comparison Over Years (1991-2023)
Year	Island Park Elementary School	Washington	Mercer Island School District
2023	22%	9%	27%
2022	23%	9%	26%
2021	26%	8%	25%
2020	20%	8%	22%
2019	20%	8%	22%
2018	17%	8%	21%
2017	17%	8%	21%
2016	21%	8%	20%
2015	21%	8%	19%
2014	23%	7%	19%
2013	23%	8%	19%
2012	23%	7%	20%
2011	22%	7%	19%
2010	25%	10%	22%
2009	22%	10%	21%
2008	21%	9%	20%
2007	20%	8%	19%
2006	21%	8%	19%
2005	22%	8%	19%
2004	20%	8%	18%
2003	18%	8%	17%
2002	18%	8%	17%
2001	16%	7%	15%
2000	17%	7%	16%
1999	18%	7%	16%
1998	19%	7%	15%
1997	16%	7%	14%
1996	15%	7%	15%
1995	8%	6%	12%
1994	13%	6%	13%
1993	15%	6%	13%
1992	15%	6%	12%
1991	11%	6%	12%

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Hispanic

26%

View Data

Hispanic Student Percentage Comparison Over Years (1991-2023)
Year	Island Park Elementary School	Washington	Mercer Island School District
2023	7%	26%	7%
2022	8%	25%	7%
2021	7%	25%	5%
2020	6%	24%	5%
2019	6%	24%	5%
2018	5%	23%	4%
2017	5%	23%	4%
2016	5%	22%	4%
2015	5%	22%	4%
2014	4%	21%	4%
2013	5%	20%	4%
2012	5%	20%	3%
2011	4%	18%	3%
2010	3%	16%	3%
2009	3%	16%	3%
2008	2%	15%	2%
2007	3%	14%	2%
2006	2%	14%	2%
2005	1%	13%	1%
2004	1%	12%	2%
2003	1%	12%	2%
2002	1%	11%	1%
2001	1%	10%	1%
2000	2%	10%	1%
1999	1%	9%	1%
1998	2%	9%	1%
1997	2%	8%	2%
1996	1%	8%	1%
1994	1%	7%	1%
1993	1%	6%	1%
1991	1%	6%	1%

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Black

n/a

View Data

Black Student Percentage Comparison Over Years (1990-2021)
Year	Island Park Elementary School	Washington	Mercer Island School District
2021	1%	5%	1%
2020	1%	5%	1%
2019	1%	5%	1%
2018	1%	4%	1%
2017	1%	4%	1%
2015	2%	4%	1%
2014	2%	5%	1%
2013	1%	5%	1%
2012	2%	5%	1%
2011	2%	5%	2%
2010	3%	6%	1%
2009	2%	5%	1%
2008	1%	6%	1%
2007	2%	6%	1%
2006	2%	6%	1%
2005	1%	6%	1%
2004	1%	6%	1%
2003	1%	6%	2%
2002	1%	5%	1%
2001	1%	5%	2%
2000	1%	5%	2%
1999	2%	5%	2%
1998	1%	5%	2%
1997	1%	5%	2%
1996	1%	4%	1%
1995	2%	5%	2%
1994	2%	4%	2%
1993	2%	4%	2%
1992	2%	4%	2%
1991	2%	4%	2%
1990	1%	4%	2%

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White

56%

48%

View Data

White Student Percentage Comparison Over Years (1991-2023)
Year	Island Park Elementary School	Washington	Mercer Island School District
2023	55%	49%	51%
2022	55%	50%	53%
2021	52%	51%	57%
2020	60%	53%	61%
2019	60%	53%	61%
2018	65%	55%	66%
2017	65%	55%	66%
2016	60%	56%	68%
2015	61%	57%	69%
2014	62%	58%	70%
2013	62%	59%	71%
2012	63%	60%	72%
2011	67%	63%	74%
2010	69%	64%	74%
2009	73%	65%	75%
2008	76%	66%	77%
2007	74%	68%	78%
2006	75%	69%	78%
2005	76%	70%	79%
2004	77%	71%	79%
2003	80%	71%	79%
2002	80%	73%	81%
2001	82%	74%	82%
2000	80%	75%	81%
1999	79%	76%	81%
1998	78%	76%	82%
1997	81%	77%	82%
1996	83%	78%	83%
1995	90%	79%	85%
1994	84%	80%	84%
1993	82%	81%	84%
1992	83%	81%	85%
1991	86%	82%	85%

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Hawaiian

n/a

View Data

Native Hawaiian or Pacific Islander Student Percentage Comparison Over Years (2011-2014)
Year	Island Park Elementary School	Washington
2014	1%	1%
2013	1%	1%
2012	1%	1%
2011	1%	1%

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Two or more races

18%

View Data

Two or More Races Student Percentage Comparison Over Years (2013-2023)
Year	Island Park Elementary School	Washington	Mercer Island School District
2023	16%	9%	14%
2022	14%	9%	13%
2021	14%	9%	12%
2020	13%	8%	11%
2019	13%	8%	11%
2018	12%	8%	8%
2017	12%	8%	8%
2016	14%	7%	8%
2015	11%	7%	7%
2014	8%	7%	6%
2013	8%	6%	5%

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All Ethnic Groups

0.62

0.69

View Data

Diversity Score Comparison Over Years (1991-2023)
Year	Island Park Elementary School	Washington	Mercer Island School District
2023	0.62	0.68	0.65
2022	0.62	0.68	0.64
2021	0.64	0.67	0.60
2020	0.59	0.65	0.56
2019	0.59	0.65	0.56
2018	0.54	0.64	0.52
2017	0.54	0.64	0.52
2016	0.58	0.63	0.50
2015	0.57	0.62	0.49
2014	0.56	0.61	0.47
2013	0.56	0.61	0.46
2012	0.55	0.60	0.44
2011	0.51	0.58	0.42
2010	0.49	0.56	0.40
2009	0.44	0.55	0.39
2008	0.39	0.54	0.37
2007	0.41	0.51	0.36
2006	0.39	0.49	0.36
2005	0.38	0.49	0.35
2004	0.37	0.48	0.35
2003	0.33	0.47	0.35
2002	0.33	0.45	0.32
2001	0.30	0.44	0.31
2000	0.33	0.42	0.31
1999	0.35	0.40	0.31
1998	0.36	0.40	0.31
1997	0.32	0.39	0.30
1996	0.29	0.39	0.29
1995	0.19	0.36	0.27
1994	0.28	0.35	0.29
1993	0.30	0.34	0.28
1992	0.29	0.33	0.26
1991	0.25	0.32	0.25

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Eligible for

49%

View Data

Free Lunch Eligibility Comparison Over Years (2003-2023)
Year	Island Park Elementary School	Washington	Mercer Island School District
2023	1%	41%	3%
2022	2%	36%	2%
2021	2%	35%	3%
2020	1%	35%	3%
2019	1%	35%	3%
2016	3%	38%	2%
2015	3%	39%	3%
2014	4%	39%	3%
2013	5%	38%	3%
2012	5%	37%	3%
2011	4%	33%	3%
2010	2%	33%	1%
2009	1%	29%	1%
2008	2%	28%	1%
2007	2%	28%	1%
2006	2%	29%	1%
2005	3%	27%	1%
2004	1%	27%	1%
2003	1%	26%	1%

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Eligible for (17-18)

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2004-2018)
Year	Island Park Elementary School	Washington	Mercer Island School District
2018	1%	7%
2017	1%	7%
2016	1%	7%
2015	1%	7%
2014	2%	7%	1%
2013	2%	7%	1%
2012	1%	7%	1%
2011	1%	7%	1%
2010	2%	8%	1%
2008	1%	9%	1%
2007	1%	9%	1%
2005	1%	9%	1%
2004	1%	9%	1%

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School Statewide Testing

School District Name

Mercer Island School District

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

Profile last updated: 02/09/2025

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Frequently Asked Questions

What is Island Park Elementary School's ranking?

Island Park Elementary School is ranked #13 out of 2,088 schools, which ranks it among the top 1% of public schools in Washington.

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

85-89% of students have achieved math proficiency (compared to the 41% WA state average), while 90-94% of students have achieved reading proficiency (compared to the 53% WA state average).

How many students attend Island Park Elementary School?

361 students attend Island Park Elementary School.

What is the racial composition of the student body?

56% of Island Park Elementary School students are White, 19% of students are Asian, 18% of students are Two or more races, and 7% of students are Hispanic.

What is the student-teacher ratio of Island Park Elementary School?

Island Park Elementary School has a student ration of 16:1, which is equal to the Washington state average of 16:1.

What grades does Island Park Elementary School offer ?

Island Park Elementary School offers enrollment in grades Kindergarten-5 (No virtual instruction).

What school district is Island Park Elementary School part of?

Island Park Elementary School is part of Mercer Island School District.