- Coulee City Elementary — 5.7 mi · Grades K–5 · 68 students
- Almira Coulee Hartline High School — 5.7 mi · Grades 9–12 · 102 students
- Coulee City Middle School — 5.7 mi · Grades 6–8
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| Metric | Coulee-Hartline School District | National Average | Comparison |
|---|---|---|---|
| Student Enrollment | 164 | 3,544 | ↓ Smaller than avg |
| Number of Schools | 3 | 7 | Varies by district |
| Per-Pupil Spending | $24,511/yr | $17,619/yr | Small district — per-pupil varies |
| District Type | Public School District | Public District | — |
| Overall Rating | 10/10 — Excellent | — | Above average |
| District | Rating | Percentile | Students |
|---|---|---|---|
| Coulee-Hartline School District (this district) | 10/10 | 91st | 164 |
| Wilson Creek School District | 2/10 | 14th | 115 |
| Mansfield School District | 5/10 | 44th | 103 |
| Soap Lake School District | 1/10 | 1st | 515 |
🔢 Show the math behind this rating
Ranked against 242 rated districts in WA → 91st percentile → 10/10.
Source: Washington OSPI SBAC ELA & Math, Meets/Exceeds Standard, 2024–25 school year. Full methodology →
About Coulee-Hartline School District
Coulee-Hartline School District serves zip code 99115, covering Coulee City, Washington with grades Kindergarten – 12th. Whether you’re researching a move, evaluating a home purchase, or preparing to enroll a child, the sections below give you a complete picture of this district’s resources, size, and what its rating means for your family.
Understanding the 10/10 Rating
SchoolDistrictFinder rates Coulee-Hartline School District 10 out of 10 — top-tier among Washington public school districts. Our ratings are based on state assessment results — the share of students scoring proficient or above in reading and math, as reported in Washington’s SBAC ELA & Math assessments (2024–25 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. Coulee-Hartline School District enrolls 164 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.
Coulee-Hartline School District ranks among the highest-performing public school districts in Washington on state assessments, with reading and math proficiency rates in roughly the top 10–20% statewide. Homes in and around zip code 99115 often carry a measurable premium relative to neighboring areas served by lower-rated districts. Families moving here for academic strength will find a district whose students test well above the state norm. Even within top-rated districts, individual school performance varies — confirm your specific school assignments directly with the district.
Enrollment for Families in Zip Code 99115
Children in zip code 99115 are assigned to Coulee-Hartline 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 99115, 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 Coulee-Hartline School District at (509)632-5231 or visit the district’s official website. Typical enrollment documents include a signed lease or mortgage statement, birth certificate, state-required immunization documentation, and recent report cards or transcripts. 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 Coulee City
Research consistently shows that district assignment affects residential property values. Because Coulee-Hartline School District serves zip code 99115, homes in and around zip code 99115 often carry a measurable premium over comparable properties in adjacent lower-rated districts. 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 Coulee-Hartline 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 99115.
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 and phone numbers are updated annually when NCES publishes new data, typically in spring; per-pupil spending comes from the US Census Bureau's Annual Survey of School System Finances, released about two years after the fiscal year it covers. Always verify your specific school assignment and enrollment requirements directly with Coulee-Hartline School District before making any housing or enrollment decision based on zip code 99115 data.