PublicCharterGrades K-6
River Montessori Elementary Charter School
3880 Cypress Drive Suite B, Petaluma, CA 94954-5613(707) 778-6414
Total Students144
Student/Teacher24.08:1
Math Prof.57.41%
Reading Prof.61.11%
School Information
Charter SchoolYes
Magnet SchoolNo
Virtual SchoolNo
CountySonoma
School DistrictOld Adobe Union School District
Principal / AdminKelly Mannion(707) 778-6414
Founded2009
Free/Reduced Lunch24.31% Eligible
Acceptance Rate100%
Student Demographics
White56.2%
Hispanic20.1%
Black2.1%
Asian5.6%
Two Or More16%
Gender Distribution
59.7%
40.3%
Male Female
Students per Grade
Grade 119
Grade 222
Grade 321
Grade 418
Grade 513
Grade 63
School Calendar 2026-2027
August 2026
Academic Schedule • 2026-2027
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River Montessori Elementary Charter 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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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
2026-2027Nurturing Young Minds in Petaluma
Families often seek educational environments that foster holistic development. This institution may offer avenues for students to explore interests like STEM and the arts, alongside potential opportunities in athletics such as soccer or track. A well-rounded education is a priority here.
Discovering Opportunities at Our School
The campus provides a nurturing setting for learners from Kindergarten through sixth grade. Parents can easily access important dates and information by reviewing the academic calendar available on this page.
Frequently Asked Questions
What extracurricular activities are available for students?
While specific programs can evolve, students may find opportunities in clubs like robotics and athletics such as soccer. We encourage you to reach out to the school directly for the most current offerings.
What is the student-to-teacher ratio?
Our educational approach focuses on individualized attention for each student.
Is transportation provided?
Information regarding transportation options can typically be found on the district's website or by contacting the school office directly.
How does the school handle parent-teacher communication?
Open communication is valued. Parents are encouraged to connect with teachers through scheduled meetings and school-wide events.
Community Reviews
Real experiences from parents, students, and alumni. Your feedback helps families make informed decisions about River Montessori Elementary Charter School.
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