Red Rock Elementary
Royal City, WA · Grades ?–3
Moses Lake, WA
NeighborhoodDecoded Rank
All factors combined
WA statewide rating — the rank below is this school's statewide position
Top 30% decoded
#229 of 1506
plausibly #210–272
Washington schools
#3 · Moses Lake metro
Achievement Rank
Raw test performance
Middle 40% achievement
#663 of 1506
Washington schools
#3 · Moses Lake metro
★★Outperforming Expectations
Raw scores understate this school — it stands well above what its student context would predict.
Data confidence:High222 students tested 9 years100% participation
Confidence is computed from sample size, year coverage, and participation rate. Higher confidence means the rank shift is stable across years and not driven by a single small cohort.
- Tested students: total students with valid scores across all reported years.
- Years of data: number of school years included. More years smooths year-to-year noise.
- Participation: share of enrolled students who took the assessment. Low participation can bias scores.
What's driving this rank
Decoded Rank: #229 of 1506
in Washington schools
Raw test scores rank this school #663, but after accounting for context, students here outperform what the data would predict. The Decoded Rank places it at #229.
Each component below is scored on a 0–100 within-metro scale. A qualitative band summarizes where the school lands.
- StrongPerforms above what its context predictsCounts for 39% of the rank
After accounting for income and demographics, does this school beat what the data would predict?
- Thin dataStudents gain ground year over yearCounts for 33% of the rank
Are kids at this school learning faster than typical for the metro?
- Above averageEquity within the schoolCounts for 17% of the rank
Are students clustered at similar levels, or split between top and bottom?
- StrongMost students were testedCounts for 11% of the rank
Was the rank computed against a representative share of the school's students?
Show the numbersFor the methodology-curious
Each component is converted to a 0–100 within-metro percentile (100 = top of the metro). "Contribution" is the percentile-points the component adds to (or subtracts from) the metro median before the schools are re-ranked into the composite.
| Component | Weight | Percentile | Contribution |
|---|---|---|---|
| Performs above what its context predicts | 39% | 99 | +19.1 |
| Students gain ground year over year · thin data | 33% | 50 | +0.0 |
| Equity within the school | 17% | 60 | +1.7 |
| Most students were tested | 11% | 100 | +5.6 |
Why trust this?- Public data sources
- Context-adjusted model
- Confidence shown
- Methodology published
This score uses state assessment data, NCES enrollment data, and Census ACS 5-year neighborhood data. The Decoded Rank adjusts for school context — student demographics, ELL/SPED service rates, and the socioeconomic profile of the surrounding tract — and shows how the school performs relative to expectation, not in absolute terms.
SchoolDecoder is one signal, not a verdict. Decoded Rank is a context-adjusted residual, not a causal claim about teaching quality. See full methodology →
All Rankings
How this school ranks across the metro, state, and among demographic peers.
| Scope | Achievement | Decoded | Shift |
|---|---|---|---|
| WA (1506 schools) | #663 | #229 | |
| Moses Lake, WA (35 schools) | #3 | #3 | |
| Among similar schools (6 peers) | #1 | #1 |
Resource context
School inputs, not ranking points
These fields describe the school and surrounding neighborhood. They help readers interpret the page, but this is not a dollar-by-dollar or ratio-by-ratio scorecard and the fields here are not components of the Decoded Rank.
- Enrollment
- 513
- Free/reduced-price lunch
- 53.6%
- Student-teacher ratio
- 17.1:1
- Locale
- Rural, remote
- School type
- Regular public school
- Enrollment model
- Neighborhood attendance area
- Neighborhood median income
- $56,059ACS tract proxy
- Neighborhood poverty
- 28.9%ACS tract proxy
- SES index
- 18.0
- Assessment data year
- 2025
- CCD year
- 2024
- ACS vintage
- 2020-2024
Within Royal School District: #1 of 3. View district
Performance Spread
How students are distributed across the four state-assessment proficiency levels — L1: below standard, L2: approaching, L3: meets (proficient), L4: exceeds. This describes the shape of results at the school, not their height.
Students at this school are broadly spread across proficiency levels.
- Level 1 — Below standard28%
- Level 2 — Approaching standard22%
- Level 3 — Meets standard (proficient)29%
- Level 4 — Exceeds standard22%
Performance Spread measures how evenly students are distributed across the L1..L4 proficiency ladder, treating the levels as an ordered scale (L1=1, L2=2, L3=3, L4=4) and weighting each by its student share. A school where most students cluster at one level has a TIGHT spread; a school split between the bottom and top has a WIDE or BIMODAL spread. Bimodal fires only when BOTH tails are non-trivial AND the middle is relatively hollow (pct_L1 ≥ 15, pct_L4 ≥ 25, pct_L2 + pct_L3 ≤ 60). It describes shape — NOT how high the school's scores are. Methodology
Nearby Schools
Sorted by distance. Both rank columns shown so you can compare quickly.
- Royal Intermediate School0.1 mi
- Royal Middle School0.2 mi
- Royal High School0.2 mi
- George Elementary15.8 mi
- Wahluke High School17.2 mi
| School | Rating | Achievement | Decoded | Shift | Story | Confidence |
|---|---|---|---|---|---|---|
| Royal Intermediate School | #8 | #15 | High Scores, Context Matters | High | ||
| Royal Middle School | #16 | #10 | Typical Profile | High | ||
| Royal High School | #4 | #2HS | HS outcome | HS pool | ||
| George Elementary | #29 | #20 | Typical Profile | Medium | ||
| Wahluke High School | Ranking unavailable | |||||
Similar Schools
Schools with comparable demographics, income, and size. Both rank columns shown for direct comparison.
| School | Rating | Achievement | Decoded | Shift | Story | Confidence |
|---|---|---|---|---|---|---|
| Stevenson Elementary | #593 | #550 | Lower by Both Measures | High | ||
| Martha Lake Elementary | #443 | #498 | Lower by Both Measures | High | ||
| Marrion Elementary School | #70 | #77 | Lower by Both Measures | High | ||
| Serene Lake Elementary | #397 | #363 | Typical Profile | High | ||
| Hazelwood Elementary School | #384 | #115 | ★★Outperforming Expectations | High |
Historical Ranks
Year-by-year decoded and achievement ranks. Pandemic-affected years are excluded — we don't interpolate scores across the gap.
| Year | Achievement | Decoded | Shift |
|---|---|---|---|
| 2025 | #3 | #3 | |
| 2024 | #4 | #10 | |
| 2023 | #6 | #3 |
Note: assessment transitions (where a state changes its test) are footnoted on the methodology page; trends are not computed across breakpoints.
Trajectory
Not used in the Decoded Rank — shown for context only.
Holding steady
Based on 3 years (2023–2025).
Slope: +0.0 pct/yr (95% CI 0.0 to 0.0)
How this works: we fit a linear trend across the available years of Decoded percentile, then bucket the slope into a direction. Wide confidence intervals (uncertain trends) collapse to Holding steady. See the methodology page for thresholds.
Growth / Learning Rate
Not published by Washington.
Growth measures year-over-year progress for the same students tracked across grades — it needs longitudinal student-level records that the state has but doesn't release at the school level. Some states (CA, ID, TN) do publish this; Washington doesn't.
For this school, SchoolDecoder shows multi-year context another way: the Historical Ranks section below tracks how the school's Decoded Rank has moved over the years we have data for, and the Subject Rankings above break out math vs. ELA performance per grade. Both are cross-sectional, not the same as growth, but together they cover most of what a parent would use growth data for.
Student Growth (Washington)
Student growth percentile: the typical student here grew faster than 41% of Washington students with similar score histories.
Median Student Growth Percentile (SGP), as published by Washington's Office of Superintendent of Public Instruction. 50 is exactly typical for the state. Based on 1 year of data.
| Year | Math SGP | ELA SGP | Students (math / ELA) |
|---|---|---|---|
| 2015 | 45 | 38 | 240 / 240 |
How this works: a Student Growth Percentile compares a student's score change to other Washington students who started at a similar place, so it measures growth independent of where a student began. We show Washington's published medians; Oregon does not publish student growth percentiles, so this panel never appears on Oregon schools. See the methodology page for how growth enters the Decoded Rank.
Evidence & technical detailClick to expand
School Alpha
School Alpha is the residual between actual and expected performance once school context is held constant. It is a context-adjusted estimate, not a causal claim about teaching quality. Its reliability shows up on the page as the confidence label and the rank interval, not as a standalone statistic.
SES index components
- SES method
- Blended SES index (ACS + FRL)
- SES index value
- 18.0
- FRL %
- 53.6%
- ELL %
- 60.4% · WA OSPI Report Card Enrollment
- SPED %
- 15.2% · WA OSPI Report Card Enrollment
- Tract median income (ACS 5-year)
- $56,059
- Tract poverty rate
- 28.9%
- Tract % bachelor's+
- 15.9%
What "Decoded Rank" means
Decoded Rank converts School Alpha — the context-adjusted residual — into a parent-facing rank within the metro pool. A higher Decoded Rank than Achievement Rank means the school's raw scores understate its performance once neighborhood and school context are held constant. The reverse means raw scores overstate it. The rank is one signal, not a verdict.