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2025-2026 School Year Calendar
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July 2025JulyJanuary 2026January (16)
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SuMTuWThFSa4Independence daySuMTuWThFSa1New Year's Day
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123451232Vacation
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67891011124567891016No School - PD Day
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131415161718191112131415161719Martin Luther King, Jr. Day
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202122232425261819202122232426-27Snow Days
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272829303125SDSD28293031
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August 2025August (4)February 2026February (13)
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SuMTuWThFSa25Opening Day for staffSuMTuWThFSa16Presidents Day
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1226Opening Day for students 1-12123456717-20Vacation
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3456789 (1/2 day)89101112131423-24Snow Days
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1011121314151626Full Day for Teachers &15161718192021
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17181920212223Paraprofessionals22SDSD25262728
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2425262728293028
Opening Day for students PreK/K
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September 2025September (19)March 2026March (21)
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SuMTuWThFSa1Labor DaySuMTuWThFSa20Eid al-Fitr
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12345612No School - PD Day1234567
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7891011121323Rosh Hashanah891011121314
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1415161718192015161718192021
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2122232425262722232425262728
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282930293031
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October 2025October (20)April 2026April (16)
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SuMTuWThFSa2Yom KippurSuMTuWThFSa3
Good Friday (holiday for students)
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123413Indigenous Peoples' Day12343Professional Development
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56789101120Diwali56789101120Patriot's Day
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121314151617181213141516171821-24Vacation
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1920212223242519202122232425
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2627282930312627282930
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November 2025November (16)May 2026May (20)
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SuMTuWThFSa4No School - PD DaySuMTuWThFSa25Memorial Day
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111Veterans Day12
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234567826Early Release3456789
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910111213141527Thanksgiving Day10111213141516
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1617181920212228Vacation17181920212223
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2324252627282924252627282930
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3031
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December 2025December (17)June 2026June (18)
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SuMTuWThFSa24VacationSuMTuWThFSa19Juneteenth
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12345625Christmas Day12345625
180 Days for students-half day
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7891011121326-31Vacation7891011121325185 days for teachers-full day
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141516171819201415161718192025Paraprofessionals - 1/2 day
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2122232425262721222324252627303 emergency days
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28293031282930
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Holiday-schools closed
Instructional HoursHigh School Exam Days:
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School vacation-schools closed
Placentino K-2: 7:40 AM - 2:15 PM
January 23 and 26
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PD-schools closed
Session 1 Preschool: 7:50 AM – 10:20 AMJune 17 and 18
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First and last day of school
Session 2 Preschool: 11:20 AM – 1:50 PM(subject to change)
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Full Day Preschool: 7:50 AM - 1:50 PM
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Placentino & Miller only:
Miller Elementary: 7:40 AM - 2:18 PMSenior Exam Days:
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Early release conference days*
Adams Middle School: 8:25 AM - 3:03 PM June 22 and 23
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Evening conferences
High School: 8:15 AM - 3:03 PM
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Emergency/Early Release Times:
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*Grades PreK-5 only
Placentino 10:44 AM
High School Graduation
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TBD
Miller Elementary: 10:47 AM
June 7, 2026
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Adams Middle School: 11:32 AM
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High School: 11:32 AM
Updated: 5/28/26
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2025-26 Legal, Religious and Cultural Holidays
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Families and staff in the Holliston Public Schools represent diverse cultures, religions and
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countries of origin. Our school calendar conveys information to the community about when
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school is in session; however, there are additional days in the school year during which families may
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observe major religious holidays that may require students to be absent from school. Such observances will be
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considered excused absences from school, and all efforts will be made to assist students to
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make up work they may miss as a result of their absence. When students will be absent from
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school for such celebrations, families are encouraged to contact their child’s teacher in
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advance.
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2025 Holidays
2026 Holidays
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September
January
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1
Labor Day
1
New Year's Day
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23
Rosh Hashanah
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Martin Luther King, Jr. Day
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October
February
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2
Yom Kippur
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Presidents Day
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13
Indigenous Peoples' Day
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20
Diwali
March
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20
Eid al-Fitr
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November
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11
Veterans Day
April
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27
Thanksgiving Day
3
Good Friday (PD Day for staff)
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20
Patriot's Day
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December
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25
Christmas Day
May
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25
Memorial Day
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June
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19
Juneteenth