Peninsula High School
Gig Harbor, WA · Grades 9–12
Seattle-Tacoma-Bellevue, WA
NeighborhoodHigh School Outcomes
Latest available dataGraduation 2024
Context-adjusted
Achievement vs. demographic expectation
Bottom 30%
Below Expected
Achievement
Raw test performance
Middle 40%
This is context-adjusted achievement (Alpha) — how grade 10–11 scores compare to expectations from the school's demographics. It is not the growth-based composite shown for elementary and middle schools, because a single-tested-grade high school has no consecutive-grade cohort to measure growth from.
- 202359%
- 202453%
Share of the tested grade (grade 10–11) meeting or exceeding standard in ELA + math, year over year. This is the school's achievement trend for the tested grade — not student growth and not the K-8 cohort-progression signal.
- Graduation
- 91%
- 2024 cohort · 93% extended · 349 students in cohort
Data limitations
- Graduation uses state cohort data. Coursework, offerings, and SAT/ACT counts use the latest available federal CRDC extracts, which can lag current graduation data.
- SAT/ACT data is count-only in this extract; without an enrollment denominator, we do not treat it as a participation rate.
- HS Decoded Rank is alpha-only: it summarizes how the school's grade 10/11 test scores compare to expectations from its demographic context, ranked against other HSs in the same metro / state / rural cohort. Graduation, AP, and SAT/ACT data above are descriptive context — they are not yet blended into the composite rank. The achievement-vs-decoded quadrant below plots context-adjusted ACHIEVEMENT (alpha) against raw achievement; it is NOT the growth-based composite shown for elementary and middle schools, because a single-tested-grade high school has no consecutive-grade cohort ladder from which to build a growth signal.
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.
- Shrunk Alpha (95% CI)
- -0.31 (95% CI: -0.33 to -0.30)
SES index components
- SES method
- Blended SES index (ACS + FRL)
- SES index value
- 81.3
- FRL %
- 29.2%
- ELL %
- 1.8% · WA OSPI Report Card Enrollment
- SPED %
- 13.1% · WA OSPI Report Card Enrollment
- Tract median income (ACS 5-year)
- $135,941
- Tract poverty rate
- 0.1%
- Tract % bachelor's+
- 47.8%
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.
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
- 1,395
- Free/reduced-price lunch
- 29.2%
- Student-teacher ratio
- 21.5:1
- Locale
- Suburb, large
- School type
- Regular public school
- Enrollment model
- Neighborhood attendance area
- Neighborhood median income
- $135,941ACS tract proxy
- Neighborhood poverty
- 0.1%ACS tract proxy
- SES index
- 81.3
- Assessment data year
- 2024
- CCD year
- 2023
- ACS vintage
- 2020-2024
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 →