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Coming soon: We're expecting this year's test scores from the California Department of Education any day now — new rankings will be posted the moment they're released!

Coming soon: This year's test scores are expected from the California Department of Education any day now — new rankings will follow the moment they're released!

Casterlin High

Public Grades 9-12

Students ?

1.9

Student/teacher ratio ?

24790 Alderpoint Rd.
Blocksburg, CA 95514-9308

(707) 926-5402

District: Southern Humboldt Joint Unified

Racial breakdown:

White:

50.0%

Two or more races:

50.0%

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At a glance

Strengths

✓Small classes — about 2 students per teacher

Not ranked this year

Casterlin High did not have enough recent test-score data to be ranked. Check the trend below for past years.

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Schools Near Casterlin High

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Ranking:

E Elementary M Middle H High A Alternative P Private

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Finance All

School													Students/Teachers											Ranking (2025)				Ranking (2024)				CAST Science (2025)		Smarter Balanced Assessments English Language Arts/Literacy (2025)		Smarter Balanced Assessments Mathematics (2025)		Per Pupil Expenditures (2025)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/Discounted Lunch Recipients (2025)	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	SchoolDigger Rating (2025)	Average Standard Score (2024)	Statewide Rank (2024)	State Percentile (2024)	Rank Change from Previous Year	CAST Science 11th Grade	CAST Science All Grades	Smarter Balanced Assessments English Language Arts/Literacy 11th Grade	Smarter Balanced Assessments English Language Arts/Literacy All Grades	Smarter Balanced Assessments Mathematics 11th Grade	Smarter Balanced Assessments Mathematics All Grades	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Casterlin High	Public	9-12	24790 Alderpoint Rd.	Blocksburg	95514	Humboldt County	Southern Humboldt Joint Unified	No	(n/a)	No	(n/a)	(707) 926-5402	4	2	1.9		2 (50.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	2 (50.0%)								(n/a)
South Fork High	Public	9-12	6831 Avenue of the Giants	Miranda	95553	Humboldt County	Southern Humboldt Joint Unified	No	(n/a)	No	(n/a)	(707) 943-3144	211	14	14.5	64.9%	150 (71.1%)	3 (1.4%)	28 (13.3%)	2 (0.9%)	7 (3.3%)	1 (0.5%)	18 (8.5%)	16.3	1763^rd of 2162 public high schools	18.5%		28.8	1522^nd of 2159 public high schools	29.5%	241	4.7	4.1	22.9	22.9	8.5	8.5	$25,651	$21,970	$3,681
Osprey Learning Center	Public	9-12	344 Humboldt Ave.	Redway	95560	Humboldt County	Southern Humboldt Joint Unified	No	(n/a)	No	(n/a)	(707) 923-2526	9	1	13.0	66.7%	6 (66.7%)	0 (0.0%)	2 (22.2%)	0 (0.0%)	1 (11.1%)	0 (0.0%)	0 (0.0%)								(n/a)							$35,176	$31,412	$3,764
Southern Trinity High	Public	9-12	600 Van Duzen Rd.	Mad River	95526	Humboldt County	Southern Trinity Joint Unified	No	(n/a)	No	(n/a)	(707) 574-6239	7	2	3.5		4 (57.1%)	0 (0.0%)	1 (14.3%)	0 (0.0%)	1 (14.3%)	0 (0.0%)	1 (14.3%)								(n/a)
Mt. Lassic High (Continuation)	Public	9-12	600 Van Duzen Rd.	Mad River	95526	Humboldt County	Southern Trinity Joint Unified	No	(n/a)	No	(n/a)	(707) 574-6239	0	0	16.6		0 ()	0 ()	0 ()	0 ()	0 ()	0 ()	0 ()								(n/a)							$31,090	$31,090	$00

Frequently Asked Questions about Casterlin High

What district is Casterlin High in?

Southern Humboldt Joint Unified

What is the racial makeup of Casterlin High?

Students at Casterlin High are 50% White, 50% Two or more races.

How many students attend Casterlin High?

In the 2024-25 school year, 4 students attended Casterlin High.

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Latest California data All new data »

2024–25 school spending dataJul 1, 2026

2024–25 attendance dataMar 13, 2026

2024–25 CSA Spanish test scoresDec 22, 2025

2024–25 dropout rates & graduation ratesNov 14, 2025

SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the California Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.