Enrollment
39
Elementary
DISTRICT 109 · STATE 465
SCHOOL COMMUNITY·SOUTHERN HUMBOLDT JOINT UNIFIED·NCES 063759006365
Casterlin Elementary
24790 Alderpoint Rd., Blocksburg, CA 95514 · (707) 926-5402 · Humboldt County
GRADES KG–08ELEMENTARY43-RURALTITLE IREGULAR SCHOOL39 STUDENTS
Student : Teacher
19.3:1
2 FTE teachers
DISTRICT 15.6:1 · STATE 22.3:1
Free / Reduced Lunch
95%
37 students
DISTRICT 79% · STATE 65%
Community
0
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Kindergarten | 12 | 31% |
| Grade 1 | 6 | 15% |
| Grade 2 | 1 | 3% |
| Grade 3 | 6 | 15% |
| Grade 4 | 4 | 10% |
| Grade 5 | 4 | 10% |
| Grade 6 | 1 | 3% |
| Grade 7 | 3 | 8% |
| Grade 8 | 2 | 5% |
Student demographics
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Test scores
CAASPP 2024-25 . % met or exceeded standardEnglish Language Arts
40.9%
CA avg 49.1% . +7.9pp since 2014
Math
40.9%
CA avg 37.7% . +2.9pp since 2014
What this means: On the CAASPP, California's statewide test, about 41 of every 100 students at this school read and write at grade level and about 41 of 100 do math at grade level. Across all California schools, those numbers are about 49 and 38. Reading and writing scores are up about 8 points since 2014, while math scores are up about 3 points.
Performance levels, 2024-25
| Subject | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| English Language Arts | 9.1% | 31.8% | 22.7% | 36.4% |
| Math | 9.1% | 31.8% | 31.8% | 27.3% |
Share of tested students at each CAASPP level. Each student counts in one level, so a row adds to about 100%.
CAASPP results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 40.9% | 40.9% |
| 2023-24 | 47.4% | 42.1% |
| 2022-23 | 43.8% | 50.0% |
| 2021-22 | 35.3% | 17.6% |
| 2018-19 | 36.4% | 27.3% |
| 2017-18 | 62.5% | 45.8% |
| 2016-17 | 60.0% | 30.0% |
| 2015-16 | 57.0% | 33.0% |
| 2014-15 | 33.0% | 38.0% |
% met or exceeded standard, all students and all tested grades.
Source: CAASPP. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
OUTPERFORMING
Top 10% of CA schools after controlling for student poverty
Actual proficiency
42.8%
composite math + reading, all grades
Predicted
23.9%
based on CA schools with similar FRL share
Beats by
+18.9pp
above demographic expectation
What this means: About 43% of students here test proficient in math and reading, well above the roughly 24% typical for California schools with a similar share of low-income students. BeatsExpectations ranks schools against others at the same poverty level, not by raw scores, so a school can post high scores and still fall short of its prediction, or post lower scores and still beat it. This school clears its prediction by about 19 points, placing it in California's top 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Where Casterlin Elementary ranks
Among elementary schools| Measure | This school | In California | In Humboldt County |
|---|---|---|---|
| Enrollment ranked largest first | 39 | #5,798 of 5,915 | #38 of 48 |
Ranked against other public elementary schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
39
+6 (+18%) vs 2020
-40% since 1990-91, when it was 65
Student : Teacher
19.3:1
was 11.0:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 39 | 2 | 19.3:1 | 95% (37) |
| 2023-24 | 36 | 2 | 17.8:1 | 89% (32) |
| 2022-23 | 28 | 3 | 9.4:1 | 86% (24) |
| 2020-21 | 33 | 3 | 11.0:1 | 39% (13) |
| 2017-18 | 32 | 3 | 10.7:1 | 72% (23) |
| 2015-16 | 37 | 3 | 12.3:1 | 27% (10) |
| 2010-11 | 29 | N/A | N/A | 72% (21) |
| 2000-01 | 68 | 4 | 17.0:1 | 54% (37) |
| 1990-91 | 65 | 3 | 21.7:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Casterlin Elementary.
Since 2017-18: students up 22% (32 to 39); teachers down 33% (3 to 2).
About Casterlin Elementary
Casterlin Elementary is an elementary school in Blocksburg, California, and it is part of Southern Humboldt Joint Unified. Its enrollment is 39 students, spread over kindergarten through 8. That compares with an average of about 465 students for elementary schools in California.
Casterlin Elementary belongs to Southern Humboldt Joint Unified, a district of 8 schools and 647 students.
At Casterlin Elementary, White students make up the biggest share, 49%. Smaller groups are 23% multiracial, 21% Hispanic, and 8% Native American. County-wide, 72% of Humboldt County residents are White.
There are 2 full-time-equivalent teachers at the school, a ratio of 19.3:1. Compared with the 22.3:1 average for elementary schools in California, this school's ratio is lower. On the income side, 95% of students qualify for free or reduced-price lunch. Across public schools in Humboldt County, the average is 60%.
After accounting for student poverty, Casterlin Elementary is in the top 10% of California schools. Its average proficiency rate across its state test results of 42.8% is 18.9 points above the 23.9% predicted for its lunch-eligibility share.
The county, Humboldt County, is where the school is located. The median household earns about $61,160 a year, 33% of adults hold a bachelor's degree or higher, and about 11% of people live in poverty. Humboldt County has 92 public schools with about 17,319 students, including Casterlin Elementary.
Casterlin High is the nearest public school to Casterlin Elementary, less than a tenth of a mile away. There are 2 more public schools inside ten miles. Local comparison: Casterlin Elementary ranks 1st of 4 nearby schools, at 42.8% versus a 19.1% average.
Federal records code the school's setting as Rural: Remote.
In 2020-21, Casterlin Elementary enrolled 33 students. By 2024-25, that number had grown to 39. The student-to-teacher ratio increased from 11.0:1 in 2020-21 to 19.3:1 in 2024-25.
People who know Casterlin Elementary can post here about open houses, carpools, and field trips. Teachers and staff are welcome to share updates too.
Humboldt County at a glance
View full county profilePopulation
134,541
Census ACS
Median income
$61,160
Household, ACS
Bachelor's+
33%
Adults 25+
Poverty rate
11%
Below federal line
Schools in county
92
17,319 students
Quick facts
Related schools
Other schools in Southern Humboldt Joint Unified
- Redway ElementaryElementary · 272 students
- South Fork HighHigh · 211 students
- Miranda Junior HighMiddle · 88 students
- Whitethorn ElementaryElementary · 16 students
- Osprey Learning CenterHigh · 9 students
- Osprey Learning Center (Alternative)Combined · 8 students
Nearby schools
- Casterlin High0.0 mi · 4
- Hoaglin-Zenia Elementary9.0 mi · 10
- Miranda Junior High10.6 mi · 88
- South Fork High10.6 mi · 211
- Southern Humboldt Community13.5 mi · 4
- Osprey Learning Center (Alternative)13.6 mi · 8
Frequently asked questions
About Casterlin ElementaryHow large is Casterlin Elementary?
Casterlin Elementary enrolls approximately 39 students in grades KG-08.
What grades does Casterlin Elementary serve?
Casterlin Elementary serves grades KG-08.
How many students per teacher at Casterlin Elementary?
Approximately 19.3:1 students per teacher at Casterlin Elementary.
What is the racial breakdown of students at Casterlin Elementary?
At Casterlin Elementary, the student body is approximately 49% White, 21% Hispanic, 23% Two or more.
Is Casterlin Elementary public or private?
Casterlin Elementary is a public K-12 school, overseen by Southern Humboldt Joint Unified.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.