PublicCharterGrades K-5
Trillium Charter School
1464 Spear Avenue, Arcata, CA 95521-4882(707) 822-4721
Total Students40
Student/Teacher13.25:1
Math Prof.42.11%
Reading Prof.63.16%
School Information
Charter SchoolYes
Magnet SchoolNo
Virtual SchoolNo
CountyHumboldt
School DistrictPacific Union Elementary School District Humboldt
Principal / AdminMarianne Keller(707) 822-4721
Founded2007
Free/Reduced Lunch87.5% Eligible
Acceptance Rate100%
Student Demographics
White57.5%
Hispanic25%
Native American12.5%
Two Or More5%
Gender Distribution
62.5%
37.5%
Male Female
Students per Grade
Grade 17
Grade 26
Grade 39
Grade 49
Grade 52
School Calendar 2026-2027
July 2026
Academic Schedule • 2026-2027
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Trillium 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 (Observed)Jul 3
Labor DaySep 7
Veterans DayNov 11
Thanksgiving DayNov 26
Christmas DayDec 25
New Year's DayJan 1
Martin Luther King Jr. DayJan 18
Presidents' DayFeb 15
Memorial DayMay 31
Juneteenth (Observed)Jun 18
Key Dates & Holidays
2026-2027Community Reviews
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