PublicGrades 9-12
Acalanes High School
1200 Pleasant Hill Road, Lafayette, CA 94549-2623(925) 280-3970
Total Students1,256
Student/Teacher19.5:1
Math Prof.63.07%
Reading Prof.82.46%
Graduation Rate97.5%
School Information
Charter SchoolNo
Magnet SchoolNo
Virtual SchoolNo
CountyContra Costa
School DistrictAcalanes Union High School District
Principal / AdminEric Shawn(925) 280-3970
Founded1940
Free/Reduced Lunch7.32% Eligible
Acceptance Rate100%
Student Demographics
White62.7%
Hispanic11.9%
Black1.5%
Asian12.1%
Native American0.1%
Pacific Islander0.2%
Two Or More10.7%
Gender Distribution
53.3%
45.8%
Male Female
Students per Grade
Grade 9305
Grade 10311
Grade 11295
Grade 12345
School Calendar 2026-2027
July 2026
Academic Schedule • 2026-2027
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Acalanes 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
Independence Day ObservanceJul 3
First Day of SchoolAug 11
Labor Day HolidaySep 7
End of First QuarterOct 9
Fall RecessOct 12
Veterans Day HolidayNov 11
Thanksgiving BreakNov 23
First Semester Finals StartDec 15
First Semester Finals EndDec 18
End of First SemesterDec 18
Winter RecessDec 21
Winter Break ContinuationJan 1
Second Semester BeginsJan 5
Martin Luther King, Jr. Day HolidayJan 18
Potential Weather DayFeb 12
Presidents' Day HolidayFeb 15
End of Third QuarterMar 12
Spring BreakApr 5
Second Semester Finals StartMay 24
Second Semester Finals EndMay 27
End of Second SemesterMay 27
Last Day of SchoolMay 27
Graduation CeremonyMay 28
Memorial Day HolidayMay 31
Juneteenth Public HolidayJun 18
Key Dates & Holidays
2026-2027Community Reviews
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