PublicGrades 9-12
Castlemont High School
8601 MacArthur Boulevard, Oakland, CA 94605-4037(510) 879-2301
Total Students719
Student/Teacher14.03:1
Math Prof.5.68%
Reading Prof.6.38%
School Information
Charter SchoolNo
Magnet SchoolNo
Virtual SchoolNo
CountyAlameda
School DistrictOakland Unified School District
Principal / AdminJoseph Blasher(510) 879-2301
Founded2011
Free/Reduced Lunch99.03% Eligible
Acceptance Rate100%
Student Demographics
White2.1%
Hispanic60.5%
Black28.5%
Asian1.5%
Native American0.6%
Pacific Islander3.2%
Two Or More3.5%
Gender Distribution
54.5%
45.3%
Male Female
Students per Grade
Grade 9175
Grade 10201
Grade 11152
Grade 12191
School Calendar 2026-2027
July 2026
Academic Schedule • 2026-2027
Holiday Event
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Castlemont 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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June 2027
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Key Dates & Holidays
Independence Day ObservanceJul 3
Professional Development DayAug 5
Collaboration Work DayAug 6
Teacher Work DayAug 7
First Day of SchoolAug 10
Labor Day HolidaySep 7
End of Marking Period (Middle/High School)Sep 17
Professional Development DaySep 18
Indigenous Peoples' Day HolidayOct 12
End of Trimester 1 (Elementary School)Oct 30
End of Marking Period (Middle/High School)Oct 30
Veterans' Day HolidayNov 11
Thanksgiving BreakNov 23
End of Semester (Middle/High School)Dec 18
Winter RecessDec 21
New Year's Day ObservanceJan 1
Professional Development DayJan 5
First Day of Spring SemesterJan 6
Martin Luther King, Jr. Day HolidayJan 18
End of Marking Period (High School)Feb 12
Presidents' Day HolidayFeb 15
End of Trimester 2 (Elementary School)Feb 19
End of Marking Period (Middle School)Feb 19
End of Marking Period (High School)Mar 25
Cesar Chavez Day HolidayMar 26
Spring BreakMar 29
Spring Break (Continued)Apr 1
End of Marking Period (Middle School)Apr 9
Last Day of Instruction / End of SemesterMay 27
Teacher Work DayMay 28
Memorial Day HolidayMay 31
Juneteenth Holiday ObservanceJun 18
Key Dates & Holidays
2026-2027Discover Opportunities at Castlemont High School
This public institution, serving grades 9-12 within the Oakland Unified School District, offers a dynamic learning environment. Families often look for schools offering sports like basketball and soccer, or enriching programs like STEM and robotics. Students may also find avenues to explore the arts and track.
Engage with the Castlemont Community
The campus fosters a vibrant community spirit. Parents can stay informed about school events and important dates by checking the academic calendar directly on this page. We encourage active participation from all families.
Frequently Asked Questions
What types of extracurricular activities are available?
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 as a parent?
Parent involvement is highly valued. Opportunities range from volunteering for school events to joining parent-teacher organizations. Please reach out to the school office for specific ways to contribute.
What is the typical student-to-teacher ratio?
The student-to-teacher ratio is a factor in educational quality. For the most current information regarding class sizes and educational support, please refer to the Oakland Unified School District's official reporting or contact the school directly.
Are there opportunities for college and career readiness?
Yes, the school is committed to preparing students for their future. This includes academic counseling, exploration of post-secondary options, and potential partnerships with local businesses and colleges.
Community Reviews
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