PublicGrades 10-12
Dario Cassina High School
251 South Barretta Street, Sonora, CA 95370-5042(209) 532-1587
Total Students44
Student/Teacher14.1:1
Reading Prof.28%
Graduation Rate80%
School Information
Charter SchoolNo
Magnet SchoolNo
Virtual SchoolNo
CountyTuolumne
School DistrictSonora Union High School District
Principal / AdminRobert Mayben(209) 532-1587
Founded1980
Free/Reduced Lunch75% Eligible
Acceptance Rate100%
Student Demographics
White68.2%
Hispanic20.5%
Two Or More9.1%
Gender Distribution
65.9%
31.8%
Male Female
Students per Grade
Grade 1124
Grade 1220
School Calendar 2026-2027
July 2026
Academic Schedule • 2026-2027
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Dario Cassina 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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Key Dates & Holidays
Independence Day HolidayJul 3
New Student OrientationAug 17
First Day of Semester 1Aug 18
Labor Day HolidaySep 7
End of 1st QuarterOct 16
Veteran's Day HolidayNov 11
Thanksgiving RecessNov 23
Semester 1 Finals ScheduleDec 17
End of Semester 1Dec 18
Winter RecessDec 21
New Year's Day HolidayJan 1
Martin Luther King Day HolidayJan 18
Lincoln's Day HolidayFeb 8
President's Day HolidayFeb 15
End of 3rd QuarterMar 26
Spring BreakMar 29
Designated Make Up DayApr 5
Memorial Day HolidayMay 31
Semester 2 Finals Day 1Jun 1
End of Semester 2 / Last Day of SchoolJun 2
SHS Graduation / Make Up DayJun 3
Juneteenth HolidayJun 18
Key Dates & Holidays
2026-2027Community Reviews
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