PublicGrades 9-12
Casterlin High School
24790 Alderpoint Road, Blocksburg, CA 95514-9308(707) 926-5402
Total Students4
Student/Teacher1.97:1
School Information
Charter SchoolNo
Magnet SchoolNo
Virtual SchoolNo
CountyHumboldt
School DistrictSouthern Humboldt Joint Unified School District
Principal / AdminSarah Purl(707) 926-5402
Founded2020
Acceptance Rate100%
Student Demographics
White50%
Two Or More50%
Gender Distribution
75%
25%
Male Female
Students per Grade
Grade 91
Grade 101
Grade 112
School Calendar 2026-2027
August 2026
Academic Schedule • 2026-2027
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Casterlin High School
Academic Calendar (2026-2027)
July 2026
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August 2026
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September 2026
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October 2026
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November 2026
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December 2026
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January 2027
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February 2027
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March 2027
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April 2027
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May 2027
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Key Dates & Holidays
First Day of SchoolAug 20
Labor Day HolidaySep 7
Classified HolidayOct 12
End of First Trimester for grades K-6Nov 6
Veteran's Day HolidayNov 11
November Intersession / Thanksgiving BreakNov 23
Thanksgiving Day HolidayNov 26
Classified HolidayNov 27
Winter Recess BeginsDec 21
Christmas Eve Local HolidayDec 24
Christmas Day HolidayDec 25
New Year's Eve Local HolidayDec 31
New Year's Day Holiday / Winter Recess EndJan 1
Martin Luther King Jr. Day HolidayJan 18
February IntersessionFeb 15
Washington's Birthday HolidayFeb 15
President's Day HolidayFeb 16
End of Second Trimester for grades K-6Mar 5
End of First Semester for grades 7-12Mar 5
April IntersessionApr 12
Classified HolidayApr 16
Memorial Day HolidayMay 31
Juneteenth HolidayJun 19
Last Day of School / Term 4 EndsJun 10
Key Dates & Holidays
2026-2027A Foundation for Future Success
Nestled in Blocksburg, CA, this public high school serves grades 9-12 within the Southern Humboldt Joint Unified School District. Families often look for schools offering dynamic sports like basketball and track, or enriching clubs such as STEM and arts programs, providing diverse avenues for student growth.
Engage and Explore
Our school fosters a supportive environment for academic and personal development. Prospective and current families can find important dates by checking the academic calendar available on this page.
Frequently Asked Questions
What extracurricular activities are available for students?
While specific programs vary each year, students often have access to clubs like robotics and athletics such as soccer. We recommend contacting the administration directly for the current list of activities.
How can I get involved in the school community?
Parent and community involvement are highly valued. Opportunities often exist through volunteering, attending school events, or joining parent-teacher organizations.
What is the general approach to curriculum development?
The curriculum aims to provide a well-rounded education, preparing students for college and career readiness through a variety of core and elective subjects.
Are there opportunities for students interested in the arts?
Yes, many educational institutions provide opportunities for students to explore creative pursuits. These can range from visual arts classes to performance-based clubs.
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