School Year Dates

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Irvine Unified school calendar 2026-27

First day, last day, breaks, holidays and teacher workdays, read from the district's own calendar.

Open the district's calendar (iusd.org)Add to your calendar (.ics)

Independent site, not affiliated with any school district. School Year Dates is an independent publisher. We are not affiliated with, endorsed by or operated by Irvine Unified or any other school district. Official calendar: iusd.org.

First day
Thanksgiving Holiday
to
Winter Recess - Year Round & Traditional / Winter Break
to
Spring Recess - Traditional Students
to
Last day

Kindergarten, pre-K, individual grades and particular schools may have different start dates or schedules. Check the district calendar for your child's grade and school.

Unmarked weekdays and computed counts use only the breaks, holidays and teacher workdays listed here. Other closures may be missing, so these are potential weekdays, not verified days of attendance.

Month by month

  • Weekday in term
  • Break
  • Holiday
  • No students (teacher workday)
  • Early release
  • First day
  • Last day
August 2026
SMTWTFS
1
2345678
910111213 Teacher Workday: Traditional Schools14 Staff Development Day (PK-12)15
161718 First day of school19 Weekday in term20 Weekday in term21 Weekday in term22
2324 Weekday in term25 Weekday in term26 Weekday in term27 Weekday in term28 Weekday in term29
3031 Weekday in term
September 2026
SMTWTFS
1 Weekday in term2 Weekday in term3 Weekday in term4 Weekday in term5
67 Labor Day8 Weekday in term9 Weekday in term10 Weekday in term11 Weekday in term12
1314 Weekday in term15 Weekday in term16 Weekday in term17 Weekday in term18 Weekday in term19
2021 Weekday in term22 Weekday in term23 Weekday in term24 Weekday in term25 Weekday in term26
2728 Weekday in term29 Weekday in term30 Weekday in term
October 2026
SMTWTFS
1 Weekday in term2 Weekday in term3
45 Weekday in term6 Weekday in term7 Weekday in term8 Weekday in term9 Weekday in term10
1112 Staff Development Day/Student Holiday (PK-12)13 Weekday in term14 Weekday in term15 Weekday in term16 Weekday in term17
1819 Weekday in term20 Weekday in term21 Weekday in term22 Weekday in term23 Weekday in term24
2526 Weekday in term27 Weekday in term28 Weekday in term29 Weekday in term30 Weekday in term31
November 2026
SMTWTFS
12 Weekday in term3 Weekday in term4 Weekday in term5 Weekday in term6 Weekday in term7
89 Weekday in term10 Weekday in term11 Veteran's Day Observance12 Weekday in term13 Weekday in term14
1516 Weekday in term17 Weekday in term18 Weekday in term19 Weekday in term20 Weekday in term21
2223 Thanksgiving Holiday24 Thanksgiving Holiday25 Thanksgiving Holiday; Lincoln’s Day (moved to this date)26 Thanksgiving Holiday27 Thanksgiving Holiday28
2930 Weekday in term
December 2026
SMTWTFS
1 Weekday in term2 Weekday in term3 Weekday in term4 Weekday in term5
67 Weekday in term8 Weekday in term9 Weekday in term10 Weekday in term11 Weekday in term12
1314 Weekday in term15 Weekday in term16 Weekday in term17 Weekday in term18 Weekday in term19
2021 Winter Recess - Year Round & Traditional / Winter Break22 Winter Recess - Year Round & Traditional / Winter Break23 Winter Recess - Year Round & Traditional / Winter Break24 Winter Recess - Year Round & Traditional / Winter Break25 Winter Recess - Year Round & Traditional / Winter Break26 Winter Recess - Year Round & Traditional / Winter Break
27 Winter Recess - Year Round & Traditional / Winter Break28 Winter Recess - Year Round & Traditional / Winter Break29 Winter Recess - Year Round & Traditional / Winter Break30 Winter Recess - Year Round & Traditional / Winter Break31 Winter Recess - Year Round & Traditional / Winter Break
January 2027
SMTWTFS
1 Winter Recess - Year Round & Traditional / Winter Break2
34 Weekday in term5 Weekday in term6 Weekday in term7 Weekday in term8 Weekday in term9
1011 Weekday in term12 Weekday in term13 Weekday in term14 Weekday in term15 Teacher Work Day/Student Holiday (9-12) TRADITIONAL ONLY; Teacher Work Day/Student Holiday (9-12) TRADITIONAL ONLY16
1718 Martin Luther King Jr. Day Observance19 Weekday in term20 Weekday in term21 Weekday in term22 Weekday in term23
2425 Weekday in term26 Weekday in term27 Weekday in term28 Weekday in term29 Weekday in term30
31
February 2027
SMTWTFS
1 Weekday in term2 Weekday in term3 Weekday in term4 Weekday in term5 Weekday in term6
78 Weekday in term9 Weekday in term10 Weekday in term11 Weekday in term12 Staff Development Day/Student Holiday (TK-12); Staff Development Day/Student Holiday (TK-12)13
1415 President’s Day Observance (Washington)16 Weekday in term17 Weekday in term18 Weekday in term19 Weekday in term20
2122 Weekday in term23 Weekday in term24 Weekday in term25 Weekday in term26 Weekday in term27
28
March 2027
SMTWTFS
1 Teacher/Student Holiday (PK-12)2 Weekday in term3 Weekday in term4 Weekday in term5 Weekday in term6
78 Weekday in term9 Weekday in term10 Weekday in term11 Weekday in term12 Weekday in term13
1415 Weekday in term16 Weekday in term17 Weekday in term18 Weekday in term19 Weekday in term20
2122 Weekday in term23 Weekday in term24 Weekday in term25 Weekday in term26 Weekday in term27
2829 Spring Recess - Traditional Students30 Spring Recess - Traditional Students31 Spring Recess - Traditional Students
April 2027
SMTWTFS
1 Spring Recess - Traditional Students2 Spring Recess - Traditional Students3
45 Weekday in term6 Weekday in term7 Weekday in term8 Weekday in term9 Weekday in term10
1112 Weekday in term13 Weekday in term14 Weekday in term15 Weekday in term16 Weekday in term17
1819 Weekday in term20 Weekday in term21 Weekday in term22 Weekday in term23 Weekday in term24
2526 Weekday in term27 Weekday in term28 Weekday in term29 Weekday in term30 Weekday in term
May 2027
SMTWTFS
1
23 Weekday in term4 Weekday in term5 Weekday in term6 Weekday in term7 Weekday in term8
910 Weekday in term11 Weekday in term12 Weekday in term13 Weekday in term14 Weekday in term15
1617 Weekday in term18 Weekday in term19 Weekday in term20 Weekday in term21 Weekday in term22
2324 Weekday in term25 Weekday in term26 Weekday in term27 Weekday in term28 Weekday in term29
3031 Memorial Day Observance
June 2027
SMTWTFS
1 Weekday in term2 Weekday in term3 Weekday in term4 Last day of school5
6789101112
131415161718 Juneteenth19
20212223242526
27282930

The 2026-27 year in words

Classes for Irvine Unified run from until . End to end that is roughly 42 weeks, and after the breaks, holidays and teacher workdays are removed, 180 potential weekdays remain, based only on the exceptions listed here. Because the year opens on a Tuesday, the first week contains four potential weekdays after listed closures; the final week contains four to the Friday finish.

The calendar lists 3 breaks. Thanksgiving Holiday: to , which is 5 days and 5 weekdays without classes. Students are off for Winter Recess - Year Round & Traditional / Winter Break from to , 12 days counting weekends and 10 weekdays counting Monday through Friday. Spring Recess - Traditional Students: to , which is 5 days and 5 weekdays without classes. The longest is Winter Recess - Year Round & Traditional / Winter Break at 12 days.

The longest run without a listed closure runs to , covering 40 potential weekdays after excluding only the exceptions recorded here. After subtracting listed closures, winter break divides the remaining potential weekdays into 81 before it and 99 after it.

11 other days off are marked as holidays: Independence Day Holiday (), Labor Day (), Staff Development Day/Student Holiday (PK-12) (), Veteran's Day Observance (), Teacher Work Day/Student Holiday (9-12) TRADITIONAL ONLY (), Martin Luther King Jr. Day Observance (), Staff Development Day/Student Holiday (TK-12) () and President’s Day Observance (Washington) (), and 3 more. For a three-day weekend, look at Independence Day Holiday, Labor Day, Staff Development Day/Student Holiday (PK-12), Teacher Work Day/Student Holiday (9-12) TRADITIONAL ONLY, Martin Luther King Jr. Day Observance, Staff Development Day/Student Holiday (TK-12), President’s Day Observance (Washington), Teacher/Student Holiday (PK-12), Memorial Day Observance and Juneteenth, which sit next to a weekend.

There is no school for students on the days set aside for teachers: Teacher Workday: Traditional Schools (), Staff Development Day (PK-12) (), Teacher Work Day/Student Holiday (9-12) TRADITIONAL ONLY () and Staff Development Day/Student Holiday (TK-12) ().

Of the 14 California districts listed here, 1 start after Irvine Unified, 11 start before it and 1 share its first day. The group's median first day is . The earliest first day on the site in California is (San Bernardino City Unified) and the latest is (Orange Unified).

The source does not say whether the board has approved this calendar, so treat the dates as the district's current published plan and check before you commit to travel.

We read these dates from a PDF calendar on iusd.org on . We summarize dates only; the district's own calendar is the version that counts.

Dates in detail

Breaks
BreakStartsEndsDaysWeekdays
Thanksgiving Holiday55
Winter Recess - Year Round & Traditional / Winter Break1210
Spring Recess - Traditional Students55
Holidays
DayDate
Independence Day Holiday
Labor Day
Staff Development Day/Student Holiday (PK-12)
Veteran's Day Observance
Lincoln’s Day (moved to this date)
Teacher Work Day/Student Holiday (9-12) TRADITIONAL ONLY
Martin Luther King Jr. Day Observance
Staff Development Day/Student Holiday (TK-12)
President’s Day Observance (Washington)
Teacher/Student Holiday (PK-12)
Memorial Day Observance
Juneteenth
Teacher workdays (no students)
DayDate
Teacher Workday: Traditional Schools
Staff Development Day (PK-12)
Teacher Work Day/Student Holiday (9-12) TRADITIONAL ONLY
Staff Development Day/Student Holiday (TK-12)
Potential weekdays by month, after listed exceptions
MonthPotential weekdays
August 202610
September 202621
October 202621
November 202615
December 202614
January 202718
February 202718
March 202719
April 202720
May 202720
June 20274

Where these dates come from

Source: iusd.org (a PDF calendar), read on . Districts revise calendars after severe weather, board votes and contract settlements, so the district's own page is the version that counts. If a date here looks wrong, tell us and we will re-check the source. How we check.

See the 2027-28 calendar for Irvine Unified

Other California districts

Districts in California close in size to Irvine Unified, with their own calendars on this site:

All California districts