Total Students330
Student/Teacher15.44:1
Math Prof.24.29%
Reading Prof.67.16%
Graduation Rate95.6%
School Information
Charter SchoolNo
Magnet SchoolNo
Virtual SchoolNo
CountyMono
School DistrictMammoth Unified School District
Principal / AdminGuillermo Munoz(760) 934-8541
Founded1980
Free/Reduced Lunch38.48% Eligible
Acceptance Rate100%
Student Demographics
White30.6%
Hispanic65.2%
Asian2.1%
Pacific Islander0.3%
Two Or More1.8%
Gender Distribution
43.9%
56.1%
Male Female
Students per Grade
Grade 982
Grade 1085
Grade 1175
Grade 1288
School Calendar 2026-2027
August 2026
Academic Schedule • 2026-2027
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Mammoth High 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 SchoolAug 20
Labor Day HolidaySep 7
MMS Early Release DaySep 8
District Early Release DaySep 15
District Early Release DaySep 22
District Early Release DaySep 29
District Early Release DaysOct 6
District Early Release DaysNov 3
Veteran's Day ObservanceNov 11
MES Conference Minimum DaysNov 17
Thanksgiving BreakNov 23
District Early Release DaysDec 1
MHS Finals & Early ReleaseDec 15
District Minimum DayDec 18
Winter RecessDec 22
District Early ReleaseJan 5
MLK Day ObservanceJan 18
President's Day HolidayFeb 15
President's Week RecessFeb 22
Spring Break RecessApr 19
Memorial Day ObservanceMay 31
Last Day of SchoolJun 9
Juneteenth ObservanceJun 18
Key Dates & Holidays
2026-2027Community Reviews
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