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Middle Schools in Sunnyside School District

New rankings! Washington test scores for the 2025-26 school year were just released — SchoolDigger posted updated rankings this week.

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At a glance

DistrictSunnyside School District222^nd of 238 Washington districtsFull district overview →

Schools

1,369

Students

Top rankedHarrison Middle School456^th of 514 Washington middle schools

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Biggest riser

Sierra Vista Middle School up 46 spots statewide this year

Compare Washington districts →See the top-ranked Washington schools →

Summary:

Sunnyside School District has two middle schools serving grades 6–8: Harrison Middle School and Sierra Vista Middle School. Together, they serve 1,369 students in the Sunnyside area, with Harrison enrolling 820 students and Sierra Vista enrolling 549. Both schools operate in a district with relatively low statewide performance, ranked in the 7th percentile among Washington districts in the supplied data.

Harrison is the stronger school based on current academic results. In 2025–26, it posted proficiency rates of 31.39% in English Language Arts, 17.51% in Math, and 28.63% in Science, compared with Sierra Vista’s 29.72%, 15.56%, and 17.71%. Harrison’s greatest advantage is in Science, where it leads by nearly 11 percentage points. It also performs especially well relative to the district in 7th-grade ELA and Math and in 8th-grade Science. However, Harrison’s ELA and Math results declined from the previous year, and its overall results remain well below Washington state averages. Math is the most significant concern, with fewer than one in five students meeting proficiency.

Sierra Vista has lower current achievement but the more encouraging recent trend. From 2024–25 to 2025–26, it improved in ELA, Math, and Science, with Math rising nearly five percentage points. Its statewide ranking also improved from the 3rd to the 8th percentile. Sierra Vista’s strongest grade-level results are in 6th grade, while its 7th-grade Math performance is particularly weak and its Science results trail both Harrison and the district. Families comparing the schools may view Harrison as the stronger choice based on current test performance, while Sierra Vista stands out for recent improvement. Across both schools, priorities include improving Math, supporting students through the 7th-grade transition, sustaining gains at Sierra Vista, and reversing Harrison’s recent ELA and Math declines.

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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 Finance All

School													Students/Teachers											Ranking (2026)				Ranking (2025)				WCAS Science (2026)		SBAC English Language Arts (2026)				SBAC Math (2026)				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 8th Grade	WCAS Science All Grades	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 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
Harrison Middle School	Public	6-8	810 S. 16th Street	Sunnyside	98944	Yakima County	Sunnyside School District	No	No	No	Yes	(509) 837-3601	820	40	20.3	83.0%	46 (5.6%)	1 (0.1%)	769 (93.8%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	4 (0.5%)	14.8	456^th of 514 public middle schools	11.3%		18.2	449^th of 534 public middle schools	15.9%	7	28.6	28.6	24.3	36.7	33.5	31.4	14.6	22.3	16.0	17.5	$18,194	$2,363	$15,831
Sierra Vista Middle School	Public	6-8	916 N. 16 Street	Sunnyside	98944	Yakima County	Sunnyside School District	No	No	No	Yes	(509) 836-4157	549	29	18.9	90.9%	27 (4.9%)	0 (0.0%)	517 (94.2%)	0 (0.0%)	1 (0.2%)	0 (0.0%)	4 (0.7%)	11.3	471^st of 514 public middle schools	8.4%		7.4	517^th of 534 public middle schools	3.2%	46	17.7	17.7	31.9	28.8	28.6	29.7	20.0	14.2	12.7	15.6	$18,615	$2,399	$16,215

Districts nearby

District	Distance	# of Schools	Statewide Rank
Granger School District	4.41 mi	4	230^th
Zillah School District	8.03 mi	4	113^th
Toppenish School District	10.15 mi	9	228^th
Mabton School District	10.34 mi	3	232^nd
Grandview School District	10.46 mi	7	184^th

See the top WA Washington districts

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.