Mercer Island High School
Mercer Island · WA · Mercer Island School District · Public
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Sammamish Senior High → Garfield High School → Bellevue High School → Newport Senior High School → West Seattle High School → Interlake Senior High School → Highline High School → Roosevelt High School →📋 At a glance
- 📚 35 AP courses offered — Elite
- ✅ Dual-enrollment program (college credit while in HS)
- ✅ Gifted & talented program
- 🔢 1 calculus classes · 22 physics · 16 chemistry
- 🎓 AP rigor: 86th percentile nationally
- 📝 SAT/ACT participation: 80th percentile by test-taker volume
Composed from federal CRDC offerings, EDFacts ACGR, and other public data. Full breakdowns below.
How Mercer Island High School compares for families
Standout academic depth by national standards.
- ▸ StatewideAP rigor in the top 14% nationally with 35 AP courses.
- ▸ LocallyWA sits right at the US average on NAEP 8th-grade math — local school quality will set your kid apart.
- ▸ vs Similar SchoolsThe closest comparables nearby: Sammamish Senior High, Garfield High School, Bellevue High School and 5 more. See the sidebar to compare side-by-side.
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🎓 Academic rigor
AP + advanced-course offerings
Elite — exceptional AP + advanced course breadth
86th percentile nationally
✅ Gifted/talented program
Source: federal Civil Rights Data Collection (CRDC 2020-21). CRDC reports what's offered + enrolled — it doesn't collect AP exam pass rates (College Board owns that data and doesn't release it school-level).
SAT / ACT participation
CRDC federal data · 2020-2180th percentile by test-taker volume
Source: federal Civil Rights Data Collection (CRDC 2020-21). Volume — not score — is what's reported here. A higher count means more students at this school are entering the college admissions pipeline. Note: 2020-21 was COVID-disrupted; some districts (especially those that stayed remote longer) report unusually low or zero takers.
👩🏫 Teacher workforce · federal CRDC
Teacher experience & reliability
Source: federal Civil Rights Data Collection (CRDC 2017-18 — the most recent vintage that publishes per-school teacher quality fields; the 2020-21 sweep had them suppressed). "Inexperienced" = teachers in their first or second year. "Chronic absence" = teachers absent 10+ days/year.
📊 State assessment · WA Smarter Balanced · grade 10
SBAC grade 10 — met or exceeded standard
School year 2024-25. Levels 3 + 4 combined ("at or above grade level"). Cells suppressed by the state when sample is small.
Source: WA state DOE Smarter Balanced results. Levels 1–2 = below standard, 3 = met, 4 = exceeded. Headline = level 3 + level 4 combined.
🏛️ Federal Title I context
Lower-need school
Not Title I eligible (FRPL < 25%)
<25% of students qualify for free/reduced lunch. Well below the Title I threshold; expect a higher-income student body on average.
Source: NCES Common Core of Data, free/reduced-price lunch eligibility. The actual Title I designation is a district decision and may differ from eligibility — but the federal eligibility math is what we show here. We don't claim to assert whether the district formally chose to enroll this school in Title I.
🏛️ Your state's public flagship
University of Washington-Seattle Campus
The in-state tuition gap is the flagship's biggest draw — most in-state families pay far less than the out-of-state sticker. Average net price after aid runs about $14,091/yr. Admission odds depend on your student's GPA and test scores, not which high school they attend.
Source: IPEDS admissions, tuition & enrollment + College Scorecard net price. Flagship = the state's primary public research university.
Chronic absenteeism
Why this matters to enrollment: A low chronic-absence rate is the cleanest school-level signal of strong family connection, classroom culture, and student engagement — all upstream drivers of enrollment stability. For school leaders: an Enrollment Trend Audit traces this dynamic forward →
Source: U.S. Department of Education, Civil Rights Data Collection 2020–2021. Rate = students chronically absent ÷ 2024 total enrollment.
Counselor capacity
Source: U.S. Department of Education, Civil Rights Data Collection 2020-2021. Counselor ratio = the school's most recent total enrollment ÷ counselor FTE. The American School Counselor Association (ASCA) recommends a 250:1 maximum; the US national median across schools with on-staff counselors is roughly 430:1.
Enrollment trend & projection
Total enrollment + grade 12, NCES Common Core of Data (2021–2024).
If the recent trend holds…
At its recent rate of -2.5%/year, projecting from 2024's 1,439 students:
≈ 170 fewer students by 2029 — a real revenue/relevance risk worth getting ahead of.
An extrapolation of the recent trajectory, not a forecast of the school's plans; ignores one-off shocks.
Revenue at risk
At $19,423 per student in district revenue, the 170 students projected to be lost by 2029 represent ≈ $3,301,910/year in funding at risk.
District total revenue ÷ enrollment, NCES F-33. Public funding largely follows enrollment, so a shrinking class is a recurring budget hit.
Most similar nearby high schools
The schools most like this one — same type, blended on distance and size — and where their enrollment is heading. These are the schools families here weigh against each other.
| School | Type | Miles | HS enrollment | Trend |
|---|---|---|---|---|
| Sammamish Senior High Bellevue |
Public | 4.0 | 1,363 | +5.9% |
| Garfield High School SEATTLE |
Public | 4.5 | 1,507 | -10.0% |
| Bellevue High School Bellevue |
Public | 2.4 | 1,683 | +11.2% |
| Newport Senior High School Bellevue |
Public | 2.2 | 1,850 | +3.2% |
| West Seattle High School SEATTLE |
Public | 7.7 | 1,479 | +20.6% |
| Interlake Senior High School Bellevue |
Public | 6.0 | 1,611 | +2.7% |
| Highline High School Burien |
Public | 8.9 | 1,423 | +27.6% |
| Roosevelt High School SEATTLE |
Public | 8.5 | 1,542 | -2.1% |