Casterlin Elementary
🇺🇸 Official data · 2025Blocksburg, California 95514 · Southern Humboldt Joint Unified
About Casterlin Elementary
Casterlin Elementary is a public elementary located in Blocksburg, in the Southern Humboldt Joint Unified school district of California, United States. It caters for Grades K–8. In 2025 it enrolled 39 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 21.2 out of 100, placing it in the lower 50% of elementary schools in United States. Its strongest component is students per teacher (45th percentile), and its weakest is community advantage (fewer free/reduced-price lunch) (12th percentile).
Other published figures: enrollment 39.
There are 2 schools in Blocksburg; Casterlin Elementary ranks 2nd of 2 scored schools there.
Success Index (US) breakdown
Each component is a percentile against elementary schools across United States.
- Math proficiency (30%)30%
- Reading proficiency (30%)30%
- Community advantage (fewer free/reduced-price lunch) (25%)94.9%
- Students per teacher (15%)19.5
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Casterlin Elementary by the official sources.
- Enrollment
- 39
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 94.9%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 19.5
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 30%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 30%
- Share of tested students proficient or above (all students, all grades).
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Schools near Casterlin Elementary
Closest schools by straight-line distance, with their Success Index (US).
Similar schools
Public elementary schools in California with a comparable Enrollment.
Bridgeville Elementary
Bridgeville · Public elementary · Grades K–8
39 students
Noriega Children Center
San Francisco · Public elementary · Grades K–K
39 students
Chemehuevi Valley Elementary
Havasu Lake · Public elementary · Grades K–5
40 students
Gravenstein First
Sebastopol · Public elementary · Grades 1–1
37 students
Berry Creek Elementary
Berry Creek · Public elementary · Grades K–8
41 students
Inverness Elementary
Inverness · Public elementary · Grades K–1
41 students
Frequently asked questions
Is Casterlin Elementary a good school?
Casterlin Elementary has a Success Index (US) of 21.2 out of 100 (Lower 50% of elementary schools in United States). The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Casterlin Elementary rank in California?
Casterlin Elementary is not ranked: schools need a published Enrollment and at least 60 students to be ranked.
How many students attend Casterlin Elementary?
Casterlin Elementary had 39 students in 2025.
Is Casterlin Elementary a elementary school or a high school?
Casterlin Elementary is classified as a elementary covering Grades K–8. It is a public school.
What other schools are near Casterlin Elementary?
There are 2 schools within 15 km of Casterlin Elementary; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.