Total Students822
Student/Teacher19.07:1
Math Prof.79.51%
Reading Prof.87.61%
School Information
Charter SchoolNo
Magnet SchoolNo
Virtual SchoolNo
CountyContra Costa
School DistrictOrinda Union School District
Principal / AdminAndrea Powers(925) 258-3090
Founded1980
Free/Reduced Lunch3.77% Eligible
Acceptance Rate100%
Student Demographics
White53.5%
Hispanic8.8%
Black1%
Asian20.9%
Native American0.1%
Two Or More15.7%
Gender Distribution
52.3%
47.7%
Male Female
Students per Grade
Grade 6260
Grade 7274
Grade 8288
School Calendar 2026-2027
August 2026
Academic Schedule • 2026-2027
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Orinda Intermediate 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
First Day of SchoolAug 11
Labor Day HolidaySep 7
Winter Break RecessDec 21
Winter Break ContinuedJan 1
Martin Luther King Jr. DayJan 18
February HolidayFeb 12
Presidents Day HolidayFeb 15
Minimum DayMar 15
Spring BreakApr 5
Last Day of SchoolMay 27
Memorial Day HolidayMay 31
Juneteenth HolidayJun 18
Key Dates & Holidays
2026-2027Community Reviews
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