Total Students377
Student/Teacher19.07:1
Math Prof.34.58%
Reading Prof.49.43%
School Information
Charter SchoolNo
Magnet SchoolNo
Virtual SchoolNo
CountyContra Costa
School DistrictByron Union Elementary School District
Principal / AdminKenneth Hickok(925) 809-7530
Founded1980
Free/Reduced Lunch33.16% Eligible
Acceptance Rate100%
Student Demographics
White46.4%
Hispanic30%
Black7.7%
Asian8%
Native American0.5%
Pacific Islander2.1%
Two Or More5.3%
Gender Distribution
48.8%
51.2%
Male Female
Students per Grade
Grade 6133
Grade 7123
Grade 8121
School Calendar 2026-2027
July 2026
Academic Schedule • 2026-2027
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Excelsior Middle 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 SchoolJul 28
Labor Day HolidaySep 7
Conference Minimum DaysSep 21
Fall Break BeginsSep 28
Fall Break RecessOct 1
Veterans Day ObservanceNov 11
Thanksgiving BreakNov 23
Winter Break BeginsDec 21
Winter Recess EndsJan 1
Martin Luther King Jr. DayJan 18
Presidents' Day BreakFeb 12
Conference Minimum DaysMar 10
Spring Break RecessMar 15
Spring RecessApr 23
Memorial Day ObservanceMay 31
Last Day of SchoolJun 3
Juneteenth ObservedJun 18
Key Dates & Holidays
2026-2027Community Reviews
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