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Holliston High School School Hours: 8:15AM - 3:03PM The letter found below the date reflects the order of the periods for that daty. As an example, August 27th will be a B day, with the order of the period: B - C - D - A.
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2025-2026 Rotating Calendar
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20252025 IMPORTANT DATES
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AUGUST
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AUGUST/SEPTEMBEROCTOBER25TEACHERS' FIRST DAY
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MTWTFMTWTF26FIRST DAY OF SCHOOL - HALF DAY STUDENTS
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2526 A27 B28 C29 D1 D23 ASEPTEMBER
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12 A3 B4 C5 D6 B7 C8 D9 A10 B1NO SCHOOL - LABOR DAY
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8 A9 B10 C11 D12 PD1314 C15 D16 A17 B12NO SCHOOL - PROFESSIONAL DEVELOPMENT DAY
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15 A16 B17 C18 D19 A2021 C22 D23 A24 B23NO SCHOOL - ROSH HASHANAH
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22 B2324 C25 D26 A27 C28 D29 A30 B31 COCTOBER
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29 B30 C
(23 days)
(20 days)1TERM 1 PROGRESS GRADES AVAILABLE
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2NO SCHOOL - YOM KIPPUR
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NOVEMBERDECEMBER13NO SCHOOL - INDIGENOUS PEOPLES' DAY
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MTWTFMTWTF20NO SCHOOL - DIWALI
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3 D4 PD5 A6 B7 C1 D2 A3 B4 C5 DNOVEMBER
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10 D1112 A13 B14 C8 A9 B10 C11 D12 A4NO SCHOOL - PROFESSIONAL DEVELOPMENT DAY
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17 D18 A19 B20 C21 D15 B16 C17 D18 A19 B5TERM 2 BEGINS
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24 A25 B26 C272822 C23 D24252611NO SCHOOL - VETERANS DAY
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(16 days)29303126EARLY RELEASE
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(17 days)27-28NO SCHOOL - THANKSGIVING RECESS
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DECEMBER
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11TERM 2 PROGRESS GRADES AVAILABLE
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24-31NO SCHOOL - DECEMBER VACATION
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