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Islander Middle School

Public Grades 6-8

13^th

SchoolDigger Rank ?

of 534 Washington Middle Schools

Better than 98% of Washington middle schools

Summary

Islander Middle School is a top-ranked public school serving about 960 students in grades 6-8 on Mercer Island, part of the state's #1 ranked Mercer Island School District.

The school consistently performs in the top 3% of all Washington middle schools, with students significantly outperforming state averages in English, math, and science. What's particularly impressive is that this high achievement extends to all student groups; for example, students from low-income families and English language learners at Islander Middle rank in the top 5 statewide. The school achieves these results efficiently, spending less per student than many nearby schools like Rainier Prep or Showalter Middle School while maintaining a higher student-to-teacher ratio.

Islander Middle's performance stands in sharp contrast to many schools just a few miles away. For instance, while Islander has very few students qualifying for free or reduced-price lunch, schools like Glacier Middle School and Aki Kurose Middle School serve communities with much higher needs and rank significantly lower statewide. The closest school with comparable academic results is Tyee Middle School in the Bellevue School District. This highlights Islander Middle's strength in sustaining student progress through the middle school years within a high-performing district framework.

960

Students ?

21.3

Student/teacher ratio ?

$17,200

Per pupil spending ?

7.8%

Free/discounted lunch ?

8225 SE 72nd
Mercer Island, WA 98040-5399

(206) 236-3413

District: Mercer Island School District

Students who attend Islander Middle School usually attend:

High:

Mercer Island High School

Feeder schools for Islander Middle School:

Elementary:	Island Park Elementary
	Lakeridge Elementary School
	Northwood Elementary School
	West Mercer Elementary

Racial breakdown:

White:

45.8%

Asian:

31.9%

Two or more races:

13.1%

See top rated Washington middle schools

Compare Islander Middle School to nearby middle schools!

At a glance

▬ Ranking trend: Holding steady — 94th percentile in 2015 → 98th in 2025

Strengths

✓Test scores above the Washington average (78% vs 48% meeting standards)

✓Ranks in the top 2% of Washington middle schools

Students meeting standards (2024-2025) ?

This school78%

District avg84%

Washington avg48%

13^th of 534

Washington public middle schools ?

Top 2%▲ up 3 pts since 2015

From top 6% (2015) to top 2% (2025)

See the entire ranking list of Washington Middle Schools →

★★★★★

SchoolDigger rating ?

1^st of 247Mercer 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
2025	97.2	13 of 534	97.6%	★★★★★
2024	96.2	19 of 535	96.4%	★★★★★
2023	96.5	17 of 539	96.8%	★★★★★
2022	97.0	14 of 541	97.4%	★★★★★
2021	97.2	12 of 529	97.7%	★★★★★
2019	95.5	14 of 512	97.3%	★★★★★
2018	95.6	12 of 437	97.3%	★★★★★
2017	94.1	14 of 435	96.8%	★★★★★
2016	95.1	10 of 443	97.7%	★★★★★
2015	92.2	25 of 445	94.4%	★★★★★
2013	93.5	11 of 498	97.8%	★★★★★
2012	94.0	9 of 497	98.2%	★★★★★
2011	95.2	11 of 492	97.8%	★★★★★
2010	96.4	5 of 483	99.0%	★★★★★
2009	95.0	11 of 476	97.7%	★★★★★
2008	97.3	5 of 466	98.9%	★★★★★
2007	96.7	10 of 463	97.8%	★★★★★
2006	97.7	4 of 449	99.1%	★★★★★
2005	98.2	4 of 425	99.1%	★★★★★
2004	99.0	7 of 421	98.3%	★★★★★

Asian

Year	Avg score	Statewide rank	Washington percentile	Rating
2025	87.6	19 of 147	87.1%	★★★★☆
2024	85.8	19 of 148	87.2%	★★★★☆
2023	87.0	19 of 145	86.9%	★★★★☆
2022	88.6	14 of 161	91.3%	★★★★★
2021	86.4	19 of 149	87.2%	★★★★☆
2019	82.8	27 of 152	82.2%	★★★★☆
2018	86.5	15 of 123	87.8%	★★★★☆

English Language Learner

Year	Avg score	Statewide rank	Washington percentile	Rating
2025	97.0	3 of 96	96.9%	★★★★★
2024	97.6	2 of 78	97.4%	★★★★★

Female

Year	Avg score	Statewide rank	Washington percentile	Rating
2025	97.7	7 of 471	98.5%	★★★★★
2024	96.9	8 of 464	98.3%	★★★★★
2023	95.7	15 of 464	96.8%	★★★★★
2022	96.8	10 of 479	97.9%	★★★★★
2021	96.9	13 of 469	97.2%	★★★★★
2019	94.2	12 of 452	97.3%	★★★★★
2018	94.3	12 of 376	96.8%	★★★★★

Hispanic

Year	Avg score	Statewide rank	Washington percentile	Rating
2025	96.5	11 of 347	96.8%	★★★★★
2024	95.0	11 of 344	96.8%	★★★★★
2023	93.3	15 of 336	95.5%	★★★★★
2022	97.9	5 of 360	98.6%	★★★★★
2021	98.2	5 of 353	98.6%	★★★★★
2019	96.4	4 of 344	98.8%	★★★★★

Low Socio Economic Status

Year	Avg score	Statewide rank	Washington percentile	Rating
2025	98.0	5 of 457	98.9%	★★★★★
2024	98.5	3 of 455	99.3%	★★★★★
2023	87.1	23 of 463	95.0%	★★★★★
2022	88.6	23 of 475	95.2%	★★★★★
2019	81.8	33 of 448	92.6%	★★★★★
2018	84.6	31 of 349	91.1%	★★★★★

Male

Year	Avg score	Statewide rank	Washington percentile	Rating
2025	96.2	20 of 472	95.8%	★★★★★
2024	95.1	23 of 466	95.1%	★★★★★
2023	96.6	14 of 470	97.0%	★★★★★
2022	97.0	15 of 480	96.9%	★★★★★
2021	97.3	11 of 476	97.7%	★★★★★
2019	96.2	8 of 453	98.2%	★★★★★
2018	96.3	10 of 371	97.3%	★★★★★

Multi-racial

Year	Avg score	Statewide rank	Washington percentile	Rating
2025	96.2	4 of 246	98.4%	★★★★★
2024	96.0	3 of 243	98.8%	★★★★★
2023	93.4	6 of 244	97.5%	★★★★★
2022	92.8	8 of 257	96.9%	★★★★★
2021	94.7	5 of 250	98.0%	★★★★★
2019	92.7	4 of 246	98.4%	★★★★★
2018	92.2	10 of 166	94.0%	★★★★★

Special Education

Year	Avg score	Statewide rank	Washington percentile	Rating
2025	82.8	21 of 186	88.7%	★★★★☆
2024	74.9	28 of 179	84.4%	★★★★☆
2023	77.1	23 of 167	86.2%	★★★★☆
2022	78.4	20 of 199	89.9%	★★★★★
2021	88.4	11 of 210	94.8%	★★★★★
2019	83.6	19 of 231	91.8%	★★★★★
2018	95.2	7 of 268	97.4%	★★★★★

White

Year	Avg score	Statewide rank	Washington percentile	Rating
2025	94.1	19 of 488	96.1%	★★★★★
2024	92.2	25 of 486	94.9%	★★★★★
2023	93.2	20 of 488	95.9%	★★★★★
2022	94.4	15 of 488	96.9%	★★★★★
2021	95.2	17 of 480	96.5%	★★★★★
2019	92.9	18 of 470	96.2%	★★★★★
2018	91.9	15 of 325	95.4%	★★★★★

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)

Low Socio Economic Status (2025)99th percentile~ school

Female (2025)99th percentile~ school

Multi-racial (2025)98th percentile~ school

English Language Learner (2025)97th percentile~ school

Hispanic (2025)97th percentile~ school

White (2025)96th percentile~ school

Male (2025)96th percentile~ school

Special Education (2025)89th percentile-9 vs school

Asian (2025)87th percentile-10 vs school

By subject vs Washington (2024-2025) ?

English Language Arts82%+29 vs state

Math78%+36 vs state

Science75%+26 vs state

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Schools Near Islander Middle School

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

School													Students/Teachers											Ranking (2025)				Ranking (2024)				WCAS Science (2025)			SBAC English Language Arts (2025)					SBAC Math (2025)					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	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	SchoolDigger Rating (2025)	Average Standard Score (2024)	Statewide Rank (2024)	State Percentile (2024)	Rank Change from Previous Year	WCAS Science 5th Grade	WCAS Science 8th Grade	WCAS Science All Grades	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 5th Grade	SBAC Math 6th Grade	SBAC Math 7th Grade	SBAC Math 8th Grade	SBAC Math All Grades	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Islander Middle School	Public	6-8	8225 SE 72nd	Mercer Island	98040	King County	Mercer Island School District	No	No	No	No	(206) 236-3413	960	45	21.3	7.8%	440 (45.8%)	9 (0.9%)	74 (7.7%)	306 (31.9%)	1 (0.1%)	0 (0.0%)	126 (13.1%)	97.2	13^th of 534 public middle schools	97.6%		96.2	19^th of 535 public middle schools	96.4%	6		75.0	75.0		84.8	78.1	83.8	82.1		78.9	79.0	76.7	78.2	$17,200	$267	$16,933
Vera Risdon Middle School	Public	6-8	6928 116th Ave SE	Newcastle	98056	King County	Renton School District	No	No	No	No	(425) 204-2700	751	34	21.8	39.3%	191 (25.4%)	49 (6.5%)	205 (27.3%)	209 (27.8%)	2 (0.3%)	5 (0.7%)	89 (11.9%)	66.9	156^th of 534 public middle schools	70.8%		66.1	164^th of 535 public middle schools	69.3%	8		48.7	48.7		48.8	63.9	62.9	58.5		42.9	57.1	44.4	48.3	$18,281	$1,158	$17,123
Aki Kurose Middle School	Public	6-8	3928 S Graham St	Seattle	98118	King County	Seattle School District No. 1	No	No	No	Yes	(206) 252-7700	817	45	18.0	56.8%	154 (18.8%)	239 (29.3%)	146 (17.9%)	192 (23.5%)	3 (0.4%)	12 (1.5%)	60 (7.3%)	50.5	240^th of 534 public middle schools	55.1%		44.5	281^st of 535 public middle schools	47.5%	41		40.6	40.6		50.2	55.1	49.2	51.3		37.5	42.6	38.2	39.3	$22,443	$1,032	$21,411
McKnight Middle School	Public	6-8	1200 Edmonds Ave NE	Renton	98056	King County	Renton School District	No	No	No	No	(425) 204-3600	811	38	21.2	49.0%	157 (19.4%)	75 (9.2%)	297 (36.6%)	202 (24.9%)	0 (0.0%)	4 (0.5%)	75 (9.2%)	51	238^th of 534 public middle schools	55.4%		54	224^th of 535 public middle schools	58.1%	14		39.9	39.9		47.4	49.2	48.2	48.2		38.5	50.0	42.4	43.5	$18,740	$1,579	$17,161
Dimmitt Middle School	Public	6-8	12320 80th Ave S	Seattle	98178	King County	Renton School District	No	No	No	Yes	(425) 204-2800	605	34	17.5	62.3%	64 (10.6%)	141 (23.3%)	172 (28.4%)	157 (26.0%)	4 (0.7%)	21 (3.5%)	46 (7.6%)	28	390^th of 534 public middle schools	27.0%		13.4	477^th of 535 public middle schools	10.8%	87		34.0	34.0		41.9	35.4	41.3	39.7		31.7	26.9	27.0	28.6	$21,054	$2,276	$18,778
Tyee Middle School	Public	6-8	13630 S.E. Allen Road	Bellevue	98006	King County	Bellevue School District	No	No	No	No	(425) 456-6800	1,007	53	19.1	18.8%	170 (16.9%)	13 (1.3%)	54 (5.4%)	675 (67.0%)	1 (0.1%)	2 (0.2%)	91 (9.0%)	98.4	9^th of 534 public middle schools	98.3%		96.8	15^th of 535 public middle schools	97.2%	6		80.2	80.2		84.5	82.9	86.7	84.7		85.5	83.3	85.0	84.6	$19,421	$328	$19,093
Mercer International Middle School	Public	6-8	1600 S Columbian Wy	Seattle	98108	King County	Seattle School District No. 1	No	No	No	No	(206) 252-8000	753	43	17.4	59.8%	91 (12.1%)	115 (15.3%)	157 (20.8%)	301 (40.0%)	4 (0.5%)	2 (0.3%)	80 (10.6%)	69.5	139^th of 534 public middle schools	74.0%		66.8	161^st of 535 public middle schools	69.9%	22		49.8	49.8		57.9	61.9	60.6	60.0		54.8	51.2	40.4	49.5	$21,123	$761	$20,362
Rainier Prep	Public, Charter	5-8	10211 12th Ave S	Seattle	98168	King County	Rainier Prep Charter School District	Yes	No	No	Yes	(206) 494-5979	359	25	14.6	74.1%	19 (5.3%)	182 (50.7%)	108 (30.1%)	30 (8.4%)	0 (0.0%)	2 (0.6%)	18 (5.0%)	71.8	126^th of 534 public middle schools	76.4%		73.6	120^th of 535 public middle schools	77.6%	6	64.4	34.1	49.7	74.4	73.9	62.9	55.8	66.9	66.7	67.1	55.1	47.7	59.2	$21,731	$3,615	$18,116
Showalter Middle School	Public	6-8	4628 S 144th St	Seattle	98168	King County	Tukwila School District	No	No	No	Yes	(206) 901-7800	651	32	20.4	75.4%	50 (7.7%)	121 (18.6%)	243 (37.3%)	164 (25.2%)	5 (0.8%)	31 (4.8%)	36 (5.5%)	12.4	482^nd of 534 public middle schools	9.7%		14.3	469^th of 535 public middle schools	12.3%	13		27.2	27.2		22.7	29.8	28.3	26.7		12.1	20.4	23.2	18.4	$22,084	$2,819	$19,265
Glacier Middle School	Public	6-8	2450 South 142nd Street	SeaTac	98168	King County	Highline School District	No	No	No	Yes	(206) 631-5300	803	35	22.7	75.5%	50 (6.2%)	61 (7.6%)	477 (59.4%)	126 (15.7%)	8 (1.0%)	27 (3.4%)	49 (6.1%)	4.4	528^th of 534 public middle schools	1.1%		7.9	516^th of 535 public middle schools	3.6%	12		16.1	16.1		15.9	15.4	15.7	15.7		9.4	11.5	11.3	10.7	$20,164	$1,544	$18,620

Frequently Asked Questions about Islander Middle School

What is the racial makeup of Islander Middle School?

Students at Islander Middle School are 46% White, 32% Asian, 13% Two or more races, 8% Hispanic.

What district is Islander Middle School in?

Mercer Island School District

Is Islander Middle School a good school?

Yes! Islander Middle School is one of the best middle schools in the state. It ranks 13^th of 534 Washington middle schools.

What high school do graduates of Islander Middle School attend?

Students who attend Islander Middle School usually go on to attend Mercer Island High School

How many students attend Islander Middle School?

In the 2024-25 school year, 960 students attended Islander Middle School.

Rate Islander Middle School!

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Schools in Mercer Island, WA

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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.