📊 Directory: NCES CCD 2024–2025·📈 Ratings: EDFacts 2021–22·🔄 Updated: August 2026·Editorial standards
📍 Rock Island, WA · Douglas County

School District for
Zip Code 98850 — Rock Island, WA

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ZIP 98850 is served by Waterville School District, rated 8/10 — 79th percentile in Washington.Ratings are percentile ranks within a single state, so they are not comparable across states.
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Waterville School District · Grades Kindergarten – 12th

8
out of 10 Rating Good
State reading & math tests (EDFacts 2021–22) · based on a district of 232 students
● Steady — within 0 points of 2018
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Can I rent in Rock Island and still attend schools in this district?
Yes. School district assignment is based on your home address, not whether you own or rent. As long as your rental address falls within the Waterville School District boundaries, your children are eligible to attend district schools.
How does the Waterville School District rating compare to other districts in WA?
The Waterville School District has an overall rating of 8/10 (Good) based on students’ reading and math proficiency on state assessments. Use our best districts in WA page to compare with other districts statewide.
School District · Rock Island, WA
Waterville School District
📍 Douglas County, WA · Zip Code 98850
8/10
Rating
232
Students
2
Schools
Kindergarten – 12th
Grade Span
Good About this district: Public school district serving Rock Island, WA
District Contact & InformationSource: NCES 2024–2025
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Grades Served
Kindergarten – 12th
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District Phone
📍
District Office
200 E BIRCH, WATERVILLE, WA 98858
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District Type
Public School District
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Assigned Schools for Zip 98850
Based on NCES district data · Always verify directly with the district
Schools in Waterville School District2 schools · NCES 2024
🏫 Elementary Schools (1)
  • Waterville Elementary — Grades K–5 · 129 students
🏠 Other Schools (1)
  • Waterville High School — Grades 6–12 · 127 students
Source: NCES Common Core of Data 2024 via Urban Institute. School assignment within a zip code depends on your exact address — confirm with the district.
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Elementary Schools
Kindergarten – 5th Grade
Contact Waterville School District for your specific school assignment within zip code 98850.
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with district
📚
Middle School
Grades 6 – 8
Contact Waterville School District for your specific school assignment within zip code 98850.
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with district
🎓
High School
Grades 9 – 12
Contact Waterville School District for your specific school assignment within zip code 98850.
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with district
District Statisticsvs. National Average
MetricWaterville School DistrictNational AverageComparison
Student Enrollment2323,700↓ Smaller than avg
Number of Schools26Varies by district
Per-Pupil Spending$14,700/yr (est.)$13,700/yrState avg est.
District TypePublic School DistrictPublic District
Overall Rating8/10 — GoodAbove average
🌏 District Map Boundary from U.S. Census TIGER
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Always verify before deciding: Contact Waterville School District directly to confirm your exact school assignment. Boundaries change annually and open enrollment may alter your options. Nearby zip codes are served by Wenatchee School District and Eastmont School District — if your address is near a district line, your assignment may differ from this zip-level estimate.
How Waterville School District Compares NearbyState percentile · EDFacts 2021–22
DistrictRatingPercentileStudents
Waterville School District (this district)8/1079th232
Omak School District2/1012th5,834
Soap Lake School District1/101st515
Quincy School District1/109th3,083
🔢 Show the math behind this rating
Reading proficiency: 62% · Math proficiency: 42.1% · Combined average: 52%
Ranked against 270 rated districts in WA → 79th percentile8/10.
Source: U.S. Dept. of Education EDFacts, 2021–22 school year. Full methodology →
Frequently Asked Questions
What grades does Waterville School District serve?
Waterville School District serves students from Kindergarten – 12th. The district operates schools at multiple levels to serve all students in zip code 98850. Contact the district directly to confirm grade configurations at specific schools.
How do I contact Waterville School District?
You can reach Waterville School District via phone: (509)745-8584. The district office can help with school assignment questions, enrollment, registration, and general inquiries about programs and services in zip code 98850.
Is Waterville School District a public school district?
Waterville School District is classified as a public school district. Public school districts are funded by local, state, and federal tax dollars and are open to all students residing within district boundaries. Enrollment is generally free of charge, and students are assigned to schools based on home address. To confirm eligibility and enrollment requirements for zip code 98850, contact Waterville School District directly.

About Waterville School District

Families in zip code 98850 (Rock Island, Washington) are assigned to Waterville School District for public education through 12th. This overview covers the district’s funding levels, scale, rating, and what to expect from the enrollment process if you’re moving to or within this zip code.

Understanding the 8/10 Rating

Waterville School District has earned an overall SchoolDistrictFinder rating of 8/10, placing it in the above average tier. Our ratings are based on state assessment results — the share of students scoring proficient or above in reading and math, as reported in the U.S. Department of Education’s EDFacts collection (2021–22 school year). We average each district’s reading and math proficiency, then rank it against other districts in the same state to produce a 1–10 score. Because Washington is compared only against itself, the rating reflects how this district performs relative to its in-state peers.

⚠️ Small-district caveat. Waterville School District enrolls 232 students. A percentile rank drawn from so few test-takers is statistically unstable — it can move several points from one year to the next on normal variation alone, and a single class of students can swing it. Treat this rating as a rough signal rather than a precise ranking, and look at the school-level detail below before drawing conclusions.

Waterville School District earns an above-average rating, with reading and math proficiency rates stronger than most other districts in Washington. Above-average districts generally show solid and consistent academic results across their schools. Families considering this area will find a district with meaningful academic strengths. Research the specific schools assigned to your address — even above-average districts have variation between individual buildings.

Enrollment for Families in Zip Code 98850

Children in zip code 98850 are assigned to Waterville School District for public school enrollment, covering grades Kindergarten – 12th. School assignments are address-specific — your elementary, middle, and high school placements depend on your exact street address within zip code 98850, not just your neighborhood. Two homes on opposite ends of the same zip code may be assigned to different schools within the same district.

To confirm your specific school assignments, contact Waterville School District at (509)745-8584 or visit the district’s official website. Typical enrollment documents include proof of residency (lease or deed plus a utility bill), your child’s birth certificate, current immunization records, and prior school records. If your child has an IEP or 504 plan, bring that documentation to enrollment — Washington districts are required to continue services within a reasonable period. Fall enrollment windows typically open in late winter or early spring; contact the district for exact dates and required steps.

School Districts and Home Values in Rock Island

School district quality is one of the most consistent factors in residential home pricing. Because Waterville School District serves zip code 98850, buyers should factor school district quality into their overall evaluation of homes in zip code 98850. District boundaries are address-specific — verify the exact district assignment for any property you’re seriously considering rather than assuming based on the neighborhood. A single block can place two adjacent homes in different districts with different ratings and different annual property tax implications.

Use the property tax estimator on this page to calculate estimated annual tax obligations based on your target purchase price. In Washington, property taxes are a primary funding source for public schools — your tax payments directly support Waterville School District programs and staff. Understanding both district quality and the associated tax burden is essential financial due diligence before committing to any home in zip code 98850.

Data Sources and Accuracy

All district information on this page is sourced from the NCES Common Core of Data (CCD) 2024–2025, the U.S. Department of Education’s annual census of all public school districts — the same dataset used by researchers, journalists, and policymakers to analyze American public education. District boundaries, school assignments, phone numbers, and per-pupil expenditure figures are updated annually when NCES publishes new data, typically in spring. Always verify your specific school assignment and enrollment requirements directly with Waterville School District before making any housing or enrollment decision based on zip code 98850 data.

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District at a Glance
Overall Rating8/10
GradeGood
Grades ServedKindergarten – 12th
District TypePublic School District
Total Students
Total Schools2
Per-Pupil Spending$14,700/yr (est.)
Phone(509)745-8584
Data SourceNCES 2024