No UC admissions data on file for Casterlin High.
This school doesn't appear in UCOP's source-school records (it may send few or no applicants to UC). Its enrollment trend and similar-school comparison are still below.
Casterlin High
Blocksburg · Humboldt County · Southern Humboldt Joint Unified · Public
Shareable scorecard →Compare with peers
Most similar nearby schools
Southern Trinity High → Whale Gulch High → Mattole Triple Junction High School → Mt. Lassic High (continuation) → Mendocino Sunrise High → Compare all similar →At a glance
- AP rigor: Bottom 6% of US high schools
Composed from federal CRDC offerings, and other public data. Full breakdowns below.
How Casterlin High compares for families
What families should know about Casterlin High.
- ▸ vs Similar SchoolsThe closest comparables nearby: Southern Trinity High, Whale Gulch High, Mattole Triple Junction High School and 2 more. See the sidebar to compare side-by-side.
For Parents
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Objective, government-grade data — no school pays us for placement.
SAT / ACT participation
CRDC federal data · 2020-21Source: 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.
College readiness
Getting ready for college
These come from the state and federal files, not from UC — so they are here whether or not Casterlin High has a UC admissions record.
Student composition — 2025-26
HS grades 9–12 racial/ethnic composition and program subgroups, from CDE Census Day Enrollment. Two-year shift shown when ≥1 pt — surfaces how the community served has changed since 2023-24.
Race / ethnicity
Program subgroups
Source: California Department of Education, Census Day Enrollment 2025-26 (HS grades 9–12). Δ shown when shift is ≥1 pt since 2023-24. Categories below 0.5% omitted.
Chronic absenteeism — 2020-21
Share of students missing 10% or more of expected attendance — the leading indicator that often precedes the demand decline shown above. Families disengaging tend to raise absenteeism first, then formally leave. Basis: grades 9–12.
Low and stable absenteeism — students are engaged and showing up. The leading indicator is healthy.
Source: California Department of Education, Chronic Absenteeism 2020-21. Benchmarks limited to non-virtual public & charter HS with ≥100 eligible students. CDE didn't publish a usable 2019-20 file (COVID).
Enrollment trend & projection
How does Casterlin High really compare on getting kids to college?
Unlock a head-to-head snapshot of Casterlin High against its 10 most similar nearby schools — matched on size, location, type. See exactly where it stands on the college pipeline.
Your similar-school group includes
Southern Trinity High · Whale Gulch High · Mattole Triple Junction High School · Mt. Lassic High (continuation) · Mendocino Sunrise High · Leggett Valley High · +4 more
Enrollment stability & demand — 2024-25
Two complementary signals: retention (do students stay once enrolled?) and demand (are families choosing the school?). Read against the Humboldt County baseline — the demographic tide is moving every CA HS, so a school's gap vs. county is the actionable signal.
Casterlin High's enrollment is shrinking far faster than Humboldt County (school +0.0% vs. county +21.5%). Stability of 100.0% means every family you keep is one fewer; the leverage is at recruitment, not retention. This is the case the high stability number alone would hide.
0 of 4 students who enrolled at Casterlin High this year didn't maintain continuous enrollment (0.0% non-stability). Mid-year transfers, dropouts, and other exits are all counted.
Nearest peer high schools
Source: California Department of Education, Stability Rate 2024-25. Benchmarks limited to non-virtual public & charter HS with ≥100 cumulative enrollees so by-design-high-churn continuation schools don't dominate the bottom of the distribution. Cumulative enrollment counts every student on the rolls during the year, so it can exceed peak-day enrollment.
District financial profile — Southern Humboldt Joint Unified (FY2020)
From 4 years of NCES F-33 filings (the federally-mandated district finance survey). Public schools don't have their own books — the district does. These figures show the financial scale, revenue dependence, instruction-vs-overhead mix, and long-term debt that shape what a school can sustain.
Local: 35.0%
Federal: 8.2%
Source: NCES F-33 Annual Survey of School System Finances (Urban Institute Education Data API). Latest year currently published: FY2020. F-33 is a district-level federal filing — it reflects the Southern Humboldt Joint Unified as a whole, not this individual school's books. Revenue mix shows where the district's dollars come from (state aid dominates in CA via LCFF). Instruction share is current expenditure on instruction ÷ total current expenditure (national benchmark ~60%). Long-term debt is end-of-year outstanding (mostly facilities bonds).
For School Admins
The full Reach Report for Casterlin High
A board- and LCAP-ready intelligence brief: your enrollment retention and college outcomes, benchmarked against your closest competitors, with a 5-year forecast, concrete steps to act on, and the rigor + outcomes story you can share with your families. Built from primary public data — prepared for you, not auto-generated.
- ✓Student-retention benchmarking vs your county median — and the LCAP evidence to back your goals
Related reading
UC testing review · August 25, 2026
College admissions · August 21, 2026