PublicCharterGrades K-6
Sonoma Mountain Elementary School
1900 Rainier Circle, Petaluma, CA 94954-2543(707) 765-4305
Total Students422
Student/Teacher24.82:1
Math Prof.72.27%
Reading Prof.78.54%
School Information
Charter SchoolYes
Magnet SchoolNo
Virtual SchoolNo
CountySonoma
School DistrictOld Adobe Union School District
Principal / AdminIndy Monday(707) 765-4305
Founded1997
Free/Reduced Lunch15.4% Eligible
Acceptance Rate100%
Student Demographics
White69.7%
Hispanic14.2%
Black0.2%
Asian5.2%
Native American0.7%
Two Or More10%
Gender Distribution
49.8%
50.2%
Male Female
Students per Grade
Grade 151
Grade 251
Grade 355
Grade 456
Grade 556
Grade 656
School Calendar 2026-2027
August 2026
Academic Schedule • 2026-2027
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Sonoma Mountain Elementary School
Academic Calendar (2026-2027)
July 2026
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August 2026
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September 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 12
Labor Day HolidaySep 7
End of 1st TrimesterOct 30
Veteran's Day HolidayNov 11
Parent Conferences Early DismissalNov 12
Fall BreakNov 23
Minimum Day Dismissal Before Winter BreakDec 18
Winter RecessDec 21
Lincoln's Birthday ObservedFeb 8
President's Day HolidayFeb 15
End of 2nd TrimesterFeb 26
Parent Conferences Early DismissalMar 8
Spring BreakApr 5
Staff Appreciation Minimum DayMay 7
Volunteer Appreciation Minimum DayMay 21
Memorial Day HolidayMay 31
Minimum Day / Last Day of SchoolJun 2
End of 3rd TrimesterJun 2
Key Dates & Holidays
2026-2027Community Reviews
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