PublicCharterGrades 6-12
John Muir Charter School
960 McCourtney Road Suite E, Grass Valley, CA 95949-7422(530) 272-4008
Total Students629
Student/Teacher16.61:1
Math Prof.6.29%
Reading Prof.13.92%
Graduation Rate30.1%
School Information
Charter SchoolYes
Magnet SchoolNo
Virtual SchoolNo
CountyNevada
School DistrictNevada County Office of Education School District
Principal / AdminR.J. Guess(530) 272-4008
Founded1999
Free/Reduced Lunch94.28% Eligible
Acceptance Rate100%
Student Demographics
White8.9%
Hispanic73%
Black8.9%
Asian1%
Native American0.6%
Pacific Islander0.3%
Two Or More6.4%
Gender Distribution
67.9%
31.2%
Male Female
Students per Grade
Grade 62
Grade 71
Grade 83
Grade 92
Grade 10355
Grade 11161
Grade 12105
School Calendar 2026-2027
July 2026
Academic Schedule • 2026-2027
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John Muir Charter 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 4
First Day of Student InstructionAug 5
Fair Day School ClosureAug 12
Minimum Day Student DismissalAug 13
Labor Day HolidaySep 7
Minimum Day for Staff MeetingsSep 16
End of First QuarterOct 2
October RecessOct 12
Veterans Day ObservanceNov 11
Minimum Day Student DismissalNov 25
Thanksgiving BreakNov 26
Minimum Day Semester FinalsDec 15
End of First SemesterDec 18
Winter BreakDec 21
New Year's Day ContinuationJan 1
Start of Second SemesterJan 4
Martin Luther King, Jr. DayJan 18
Presidents' Day Observance (Day 1)Feb 12
Presidents' Day Observance (Day 2)Feb 15
End of Third QuarterMar 12
Minimum Day for Staff MeetingsMar 17
Spring Break CommencementMar 29
Spring Recess ContinuationApr 1
Minimum Day Semester FinalsMay 25
Last Day of Student InstructionMay 28
Memorial Day ObservanceMay 31
Juneteenth ObservanceJun 18
Key Dates & Holidays
2026-2027Community Reviews
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