Total Students1,115
Student/Teacher20.49:1
Math Prof.63.33%
Reading Prof.81.85%
Graduation Rate97.1%
School Information
Charter SchoolNo
Magnet SchoolNo
Virtual SchoolNo
CountySan Mateo
School DistrictSan Mateo Union High School District
Principal / AdminPamela Duszynski(650) 558-2599
Founded1980
Free/Reduced Lunch20.27% Eligible
Acceptance Rate100%
Student Demographics
White10.7%
Hispanic20.3%
Black0.3%
Asian58.7%
Pacific Islander1%
Two Or More9%
Gender Distribution
51.9%
48%
Male Female
Students per Grade
Grade 9274
Grade 10278
Grade 11288
Grade 12275
School Calendar 2026-2027
August 2026
Academic Schedule • 2026-2027
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Mills 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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Key Dates & Holidays
Fall Semester Begins for StudentsAug 12
Labor Day HolidaySep 7
Minimum DaySep 11
First Marking Period EndsSep 18
Professional Development Day - No Student AttendanceOct 12
Second Marking Period EndsOct 30
Veterans Day Observance HolidayNov 11
Staff Recess - No Student AttendanceNov 25
Thanksgiving Days HolidayNov 26
Minimum Days for Semester EndDec 16
Third Marking Period EndsDec 18
Fall Semester Ends for StudentsDec 18
Winter Recess BeginsDec 21
Winter Recess EndsJan 1
Fall Semester Ends for TeachersJan 5
Spring Semester Begins for StudentsJan 6
Martin Luther King Jr. Day HolidayJan 18
Presidents' Day HolidayFeb 15
Fourth Marking Period EndsFeb 19
Open HouseMar 11
Minimum DayMar 12
Spring Recess BeginsMar 29
Spring Recess EndsApr 1
Fifth Marking Period EndsApr 9
Minimum Days for Semester EndMay 25
Spring Semester Ends for StudentsMay 27
Spring Semester Ends for Teachers / Workshop DayMay 28
Memorial Day HolidayMay 31
Key Dates & Holidays
2026-2027Community Reviews
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