Segerstrom High School

• ▸On UC Reach Score, Segerstrom High School sits near the bottom of its similar-school group (ranked #9 of 11): 20 vs. a peer median of 37.
• ▸Segerstrom High School's UC Reach Score has stepped down from a peak of 26 in 2019 to 20 in 2025 — a 6-point decline worth tracking.
• ▸Across the top-6 UC campuses, Segerstrom High School is admitting at roughly +7 percentage points above what its average applicant GPA (3.809) alone would predict (27% actual vs. 19% expected). That's a meaningful signal — it can reflect UC's track record with this school's graduates, students presenting strongly in UC's holistic review (essays, EC's, context), or institutional familiarity helping at the margin. The data can't distinguish which, but the pattern itself is real and worth understanding.
• ▸Senior-class enrollment is down 5% (651→620 from 2018 to 2026), tracking the peer-group median of -6%.
• ▸In business terms, this is market-share growth during a market contraction. Orange County's senior population shrank 7% over the same window — Segerstrom High School only shrank 5%. So Segerstrom High School picked up about 2 percentage points of relative share — families chose it over the alternatives even as the overall pool got smaller. That's overperforming the market in a shrinking market.
• ▸At its recent rate (-1.3%/yr), enrollment projects to ~2124 by 2029 — about 85 fewer students than today.

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UC Reach = top-6 UC admits ÷ senior class. Sources: UCOP Admissions by Source School, CDE enrollment, IRS Form 990, NCES F-33. Reach — by Test Prep Gurus · Methodology

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