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Island Park Elementary

Public Grades K-5

9^th

SchoolDigger Rank ?

of 1,138 Washington Elementary Schools

Better than 99% of Washington elementary schools

Summary

Island Park Elementary in Mercer Island, WA, serves 364 students in grades K–5 in the highly regarded Mercer Island School District, a suburban district ranked first among Washington’s 238 districts. The school ranks 9th out of 1,138 Washington elementary schools for 2025–2026 and has maintained a five-star rating in every reported year. It has ranked among the state’s top 15 schools for five consecutive reported years, making its long-term consistency one of its strongest qualities.

Island Park’s latest proficiency rates are excellent: 88.89% in English language arts, 83.57% in math, and 87.84% in science. Each result is substantially above Washington averages, and the school also exceeds district averages in ELA and math. Among nearby schools, only Lakeridge Elementary School currently ranks higher statewide, at fourth, and it leads Island Park by 2.46 points in ELA and 4.82 points in math. Island Park outperforms Northwood Elementary School, Newport Heights Elementary, Enatai Elementary School, and most other comparison schools. The fairest local comparisons are the other Mercer Island schools because they share a similar district setting.

Parents may want to monitor math more closely than ELA. Math performance has softened from roughly 89% in 2022–2024 to 83.57% most recently, and fourth-grade math was the school’s lowest reported grade-subject result at 79.73%. Third-grade school results are suppressed and should be treated as unknown. Island Park’s 14.9:1 student-teacher ratio is favorable compared with Lakeridge Elementary School and West Mercer Elementary. Its 2.2% free-and-reduced-price lunch rate is also lower than at most comparison schools, an important factor when interpreting test-score differences. Overall, the school remains excellent, with strong science results, a notable special education subgroup ranking, and only modest signs of performance moderation.

364

Students ?

14.9

Student/teacher ratio ?

$20,339

Per pupil spending ?

2.2%

Free/discounted lunch ?

5437 Island Crest Way
Mercer Island, WA 98040-4647

(206) 236-3410

District: Mercer Island School District

Students who attend Island Park Elementary usually attend:

Middle:	Islander Middle School
High:	Mercer Island High School

Racial breakdown:

White:

55.8%

Asian:

20.1%

Two or more races:

16.8%

See top rated Washington elementary schools

Compare Island Park Elementary to nearby elementary schools!

At a glance

▲ Ranking trend: Improving — 94th percentile in 2016 → 99th in 2026

Strengths

✓Test scores above the Washington average (86% vs 48% meeting standards)

✓Ranks in the top 1% of Washington elementary schools

✓Ranking is trending up — up 5 percentile points since 2016

Worth a look

!Some student groups rank well below the school's overall statewide standing

Students meeting standards (2025-2026) ?

This school86%

District avg84%

Washington avg48%

9^th of 1,138

Washington public elementary schools ?

Top 1%▲ up 5 pts since 2016

From top 6% (2016) to top 1% (2026)

See the entire ranking list of Washington Elementary Schools →

★★★★★

SchoolDigger rating ?

2^nd of 3Elementary Schools in the Mercer Island School District

1^st of 238Mercer Island School District among Washington districts

Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Washington percentile	Rating
2026	98.2	9 of 1138	99.2%	★★★★★
2025	98.0	10 of 1160	99.1%	★★★★★
2024	98.5	7 of 1168	99.4%	★★★★★
2023	98.1	14 of 1169	98.8%	★★★★★
2022	97.9	11 of 1169	99.1%	★★★★★
2021	97.8	24 of 1107	97.8%	★★★★★
2019	94.8	30 of 1130	97.3%	★★★★★
2018	93.8	45 of 1054	95.7%	★★★★★
2017	94.9	29 of 1056	97.3%	★★★★★
2016	91.8	61 of 1053	94.2%	★★★★★
2015	94.6	38 of 1067	96.4%	★★★★★
2013	89.1	63 of 1106	94.3%	★★★★★
2012	92.9	24 of 1097	97.8%	★★★★★
2011	93.2	29 of 1092	97.3%	★★★★★
2010	91.8	42 of 1088	96.1%	★★★★★
2009	94.9	16 of 1072	98.5%	★★★★★
2008	95.6	11 of 1067	99.0%	★★★★★
2007	92.5	43 of 1069	96.0%	★★★★★
2006	94.1	18 of 1051	98.3%	★★★★★
2005	94.8	13 of 1031	98.7%	★★★★★
2004	96.2	11 of 1026	98.9%	★★★★★

Asian

Year	Avg score	Statewide rank	Washington percentile	Rating
2022	67.5	74 of 187	60.4%	★★★☆☆
2021	75.0	41 of 131	68.7%	★★★☆☆
2019	72.9	55 of 201	72.6%	★★★★☆
2018	77.0	40 of 169	76.3%	★★★★☆

Female

Year	Avg score	Statewide rank	Washington percentile	Rating
2025	97.5	10 of 1092	99.1%	★★★★★
2024	98.4	3 of 1093	99.7%	★★★★★
2022	98.1	4 of 1100	99.6%	★★★★★
2021	98.4	11 of 1008	98.9%	★★★★★
2019	92.3	45 of 1068	95.8%	★★★★★
2018	92.4	47 of 1004	95.3%	★★★★★

Male

Year	Avg score	Statewide rank	Washington percentile	Rating
2025	96.7	22 of 1098	98.0%	★★★★★
2024	94.2	45 of 1099	95.9%	★★★★★
2023	95.9	27 of 1099	97.5%	★★★★★
2022	96.5	19 of 1113	98.3%	★★★★★
2021	96.9	21 of 1025	98.0%	★★★★★
2019	93.7	35 of 1075	96.7%	★★★★★
2018	94.0	28 of 999	97.2%	★★★★★

Special Education

Year	Avg score	Statewide rank	Washington percentile	Rating
2026	84.8	29 of 432	93.3%	★★★★★
2025	91.5	15 of 363	95.9%	★★★★★
2023	95.5	6 of 308	98.1%	★★★★★
2022	95.8	10 of 478	97.9%	★★★★★
2021	90.6	8 of 158	94.9%	★★★★★

White

Year	Avg score	Statewide rank	Washington percentile	Rating
2025	95.7	9 of 1007	99.1%	★★★★★
2024	96.3	6 of 1009	99.4%	★★★★★
2023	96.5	5 of 1011	99.5%	★★★★★
2022	96.3	5 of 1031	99.5%	★★★★★
2021	97.4	8 of 943	99.2%	★★★★★
2019	87.9	71 of 1027	93.1%	★★★★★
2018	87.7	54 of 833	93.5%	★★★★★

How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)

White (2025)99th percentile~ school

Female (2025)99th percentile~ school

Male (2025)98th percentile~ school

Special Education (2026)93rd percentile-6 vs school

Asian (2022)60th percentile-39 vs school

By subject vs Washington (2025-2026) ?

English Language Arts89%+36 vs state

Science88%+37 vs state

Math84%+40 vs state

5.0

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What people are saying

by a parent on FaceBook
Sunday, January 31, 2016

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Schools Near Island Park Elementary

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Ranking:

E Elementary M Middle H High A Alternative P Private

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Immunizations Finance All

School													Students/Teachers											Ranking (2026)				Ranking (2025)				WCAS Science (2026)			SBAC English Language Arts (2026)							SBAC Math (2026)							% Completely Immunized (2024)	% Polio (2024)	% Measles (2024)	% Mumps (2024)	% Rubella (2024)	% Diphtheria (2024)	% Hepatitis B (2024)	% Varicella (2024)	% Pertussis (2024)	% Tetanus (2024)	Per Pupil Expenditures (2024)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/Discounted Lunch Recipients (2025)	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2026)	Statewide Rank (2026)	State Percentile (2026)	SchoolDigger Rating (2026)	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	Rank Change from Previous Year	WCAS Science 5th Grade	WCAS Science 8th Grade	WCAS Science All Grades	SBAC English Language Arts 3rd Grade	SBAC English Language Arts 4th Grade	SBAC English Language Arts 5th Grade	SBAC English Language Arts 6th Grade	SBAC English Language Arts 7th Grade	SBAC English Language Arts 8th Grade	SBAC English Language Arts All Grades	SBAC Math 3rd Grade	SBAC Math 4th Grade	SBAC Math 5th Grade	SBAC Math 6th Grade	SBAC Math 7th Grade	SBAC Math 8th Grade	SBAC Math All Grades	% Completely Immunized KG	% Polio KG	% Measles KG	% Mumps KG	% Rubella KG	% Diphtheria KG	% Hepatitis B KG	% Varicella KG	% Pertussis KG	% Tetanus KG	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Island Park Elementary	Public	K-5	5437 Island Crest Way	Mercer Island	98040	King County	Mercer Island School District	No	No	No	No	(206) 236-3410	364	24	14.9	2.2%	203 (55.8%)	1 (0.3%)	25 (6.9%)	73 (20.1%)	0 (0.0%)	0 (0.0%)	61 (16.8%)	98.2	9^th of 1138 public elementary schools	99.2%		98	10^th of 1160 public elementary schools	99.1%	1	87.8		87.8		83.8	91.9				88.9		79.7	82.4				83.6	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	$20,339	$439	$19,900
West Mercer Elementary	Public	K-5	4141 81st Ave SE	Mercer Island	98040	King County	Mercer Island School District	No	No	No	No	(206) 236-3430	431	26	16.4	7.9%	179 (41.5%)	12 (2.8%)	35 (8.1%)	140 (32.5%)	1 (0.2%)	0 (0.0%)	61 (14.2%)								(n/a)					86.5					85.8		88.2					86.5	96.7	96.7	98.4	98.4	98.4	96.7	96.7	98.4	96.7	96.7	$19,811	$264	$19,547
Northwood Elementary School	Public	PK, KG-5	4030 86th Ave SE	Mercer Island	98040	King County	Mercer Island School District	No	No	No	Yes	(253) 841-8740	398	26	15.0	10.3%	183 (46.0%)	2 (0.5%)	40 (10.1%)	116 (29.1%)	0 (0.0%)	1 (0.3%)	53 (13.3%)	94.7	59^th of 1138 public elementary schools	94.8%		89.9	112^th of 1160 public elementary schools	90.3%	53	84.9		84.9	73.2	65.4	79.3				72.7	81.9	64.3	77.4				75.1	91.7	91.7	93.8	93.8	93.8	93.8	95.8	95.8	93.8	93.8	$21,645	$597	$21,048
Lakeridge Elementary School	Public	K-5	8215 SE 78th	Mercer Island	98040	King County	Mercer Island School District	No	No	No	No	(206) 236-3415	401	23	17.1	3.5%	175 (43.6%)	3 (0.7%)	19 (4.7%)	118 (29.4%)	1 (0.2%)	0 (0.0%)	84 (20.9%)	98.9	4^th of 1138 public elementary schools	99.6%		97.9	11^th of 1160 public elementary schools	99.1%	7					88.6					91.4		86.4	84.2				88.4	97.4	100.0	97.4	97.4	97.4	100.0	100.0	100.0	100.0	100.0	$17,990	$264	$17,726
Newport Heights Elementary	Public	PK, KG-5	5225 119th Ave SE	Bellevue	98006	King County	Bellevue School District	No	No	No	No	(425) 456-5500	549	29	19.0	26.6%	137 (25.0%)	16 (2.9%)	50 (9.1%)	280 (51.0%)	1 (0.2%)	3 (0.5%)	62 (11.3%)	93.4	74^th of 1138 public elementary schools	93.5%		91.8	91^st of 1160 public elementary schools	92.2%	17	85.6		85.6	73.4	71.3	76.4				73.8	75.6	73.4	77.5				75.6	83.6	86.9	88.5	88.5	88.5	85.3	88.5	86.9	85.3	85.3	$24,302	$138	$24,164
Hazelwood Elementary School	Public	K-5	7100 116th Ave SE	Newcastle	98056	King County	Renton School District	No	No	No	No	(425) 204-4550	478	26	18.1	20.3%	200 (41.8%)	18 (3.8%)	49 (10.3%)	139 (29.1%)	3 (0.6%)	2 (0.4%)	67 (14.0%)	93.9	69^th of 1138 public elementary schools	93.9%		82.5	191^st of 1160 public elementary schools	83.5%	122	83.3		83.3	70.2	72.1	81.9				74.6	85.7		76.4				80.8	92.5	97.0	94.0	94.0	94.0	97.0	95.5	94.0	97.0	97.0	$19,671	$982	$18,688
Graham Hill Elementary School	Public	PK, KG-5	5149 S Graham St	Seattle	98118	King County	Seattle School District No. 1	No	No	No	Yes	(206) 252-7140	266	22	12.0	47.4%	71 (26.7%)	56 (21.1%)	63 (23.7%)	37 (13.9%)	0 (0.0%)	2 (0.8%)	33 (12.4%)	36.6	728^th of 1138 public elementary schools	36.0%		44	624^th of 1160 public elementary schools	46.2%	104	40.5		40.5	29.2	52.8	51.4				43.0	33.3	62.2	24.3				39.3	81.6	84.2	84.2	84.2	84.2	84.2	84.2	84.2	84.2	84.2	$25,715	$1,394	$24,322
Orca K-8 School	Public	K-8	5215 46 Ave S	Seattle	98118	King County	Seattle School District No. 1	No	No	No	Yes	(206) 252-6900	278	24	11.7	38.8%	101 (36.3%)	76 (27.3%)	43 (15.5%)	25 (9.0%)	1 (0.4%)	3 (1.1%)	26 (9.4%)	64.1	380^th of 1138 public elementary schools	66.6%		53.9	505^th of 1160 public elementary schools	56.5%	125	58.6	30.8	45.5	54.6	59.4	62.1	25.0	30.0	45.8	48.7	55.9	71.9	51.7	31.6	21.1	33.3	47.8	87.9	87.9	87.9	87.9	87.9	87.9	87.9	87.9	87.9	87.9	$21,011	$1,092	$19,918
Martin Luther King Junior Elementary School	Public	PK, KG-5	6725 45 Ave S	Seattle	98118	King County	Seattle School District No. 1	No	No	No	Yes	(206) 252-6770	289	21	13.5	73.0%	18 (6.2%)	143 (49.5%)	45 (15.6%)	51 (17.6%)	4 (1.4%)	2 (0.7%)	26 (9.0%)	18.5	931^st of 1138 public elementary schools	18.2%		17	1000^th of 1160 public elementary schools	13.8%	69	37.5		37.5	34.8	20.6	35.0				30.8	39.1	28.6	20.0				29.8	69.2	76.9	76.9	76.9	76.9	71.8	92.3	76.9	71.8	71.8	$27,978	$2,247	$25,731
Enatai Elementary School	Public	PK, KG-5	10700 SE 25th Street	Bellevue	98007	King County	Bellevue School District	No	No	No	No	(425) 456-5200	518	27	19.0	21.4%	170 (32.8%)	24 (4.6%)	58 (11.2%)	183 (35.3%)	0 (0.0%)	0 (0.0%)	83 (16.0%)	87.1	153^rd of 1138 public elementary schools	86.6%		76.3	250^th of 1160 public elementary schools	78.4%	97	72.7		72.7	75.0	63.5	71.1				69.4	73.9	64.0	67.5				68.1	76.0	77.2	77.2	77.2	77.2	76.0	84.8	76.0	76.0	76.0	$21,953	$1,161	$20,792

Frequently Asked Questions about Island Park Elementary

What is the racial makeup of Island Park Elementary?

Students at Island Park Elementary are 56% White, 20% Asian, 17% Two or more races, 7% Hispanic.

Is Island Park Elementary a good school?

Yes! Island Park Elementary is one of the best elementary schools in the state. It ranks 9^th of 1138 Washington elementary schools.

What schools do graduates of Island Park Elementary attend?

Students who attend Island Park Elementary usually go on to attend:

Middle : Islander Middle School
High : Mercer Island High School

How many students attend Island Park Elementary?

In the 2024-25 school year, 364 students attended Island Park Elementary.

What district is Island Park Elementary in?

Mercer Island School District

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Latest Washington data All new data »

2025–26 SBAC & WCAS test scoresSep 10, 2026

2024–25 dropout rates & graduation ratesJan 8, 2026

2022–23 through 2023–24 school spending dataJan 6, 2026

2024–25 SBAC & WCAS test scoresSep 10, 2025

SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau, the Washington State Department of Health and the Washington Office of Superindentent of Public Instruction.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.