School Year Dates

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Irvine Unified school calendar 2027-28

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
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 2027
SMTWTFS
1234567
8910111213 Staff Development Day (PK-12)14
1516 Teacher Workday: Traditional Schools17 Teacher Workday: Traditional Schools18 First day of school19 Weekday in term20 Weekday in term21
2223 Weekday in term24 Weekday in term25 Weekday in term26 Weekday in term27 Weekday in term28
2930 Weekday in term31 Weekday in term
September 2027
SMTWTFS
1 Weekday in term2 Weekday in term3 Weekday in term4
56 Labor Day7 Weekday in term8 Weekday in term9 Weekday in term10 Weekday in term11
1213 Weekday in term14 Weekday in term15 Weekday in term16 Weekday in term17 Weekday in term18
1920 Weekday in term21 Weekday in term22 Weekday in term23 Weekday in term24 Weekday in term25
2627 Weekday in term28 Weekday in term29 Weekday in term30 Weekday in term
October 2027
SMTWTFS
1 Weekday in term2
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 Weekday in term16
1718 Staff Development Day/Student Holiday (PK-12)19 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
November 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 Veteran's Day Observance12 Weekday in term13
1415 Weekday in term16 Weekday in term17 Weekday in term18 Weekday in term19 Weekday in term20
2122 Thanksgiving Holiday23 Thanksgiving Holiday24 Thanksgiving Holiday; Lincoln’s Day (moved to this date)25 Thanksgiving Holiday26 Thanksgiving Holiday27
2829 Weekday in term30 Weekday in term
December 2027
SMTWTFS
1 Weekday in term2 Weekday in term3 Weekday in term4
56 Weekday in term7 Weekday in term8 Weekday in term9 Weekday in term10 Weekday in term11
1213 Weekday in term14 Weekday in term15 Weekday in term16 Weekday in term17 Weekday in term18
1920 Winter Recess - Year Round & Traditional21 Winter Recess - Year Round & Traditional22 Winter Recess - Year Round & Traditional23 Winter Recess - Year Round & Traditional24 Winter Recess - Year Round & Traditional25 Winter Recess - Year Round & Traditional
26 Winter Recess - Year Round & Traditional27 Winter Recess - Year Round & Traditional28 Winter Recess - Year Round & Traditional29 Winter Recess - Year Round & Traditional30 Winter Recess - Year Round & Traditional31 Winter Recess - Year Round & Traditional
January 2028
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 Teacher Work Day/Student Holiday (9-12) TRADITIONAL ONLY15
1617 Martin Luther King Jr. Day Observance18 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 Weekday in term
February 2028
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 President’s Day Observance (Washington)22 Weekday in term23 Weekday in term24 Weekday in term25 Weekday in term26
2728 Weekday in term29 Weekday in term
March 2028
SMTWTFS
1 Weekday in term2 Weekday in term3 Weekday in term4
56 Staff Development Day/Student Holiday (TK-12)7 Weekday in term8 Weekday in term9 Weekday in term10 Weekday in term11
1213 Weekday in term14 Weekday in term15 Weekday in term16 Weekday in term17 Weekday in term18
1920 Weekday in term21 Weekday in term22 Weekday in term23 Weekday in term24 Weekday in term25
2627 Weekday in term28 Weekday in term29 Weekday in term30 Weekday in term31 Weekday in term
April 2028
SMTWTFS
1
23 Spring Recess - Traditional Students4 Spring Recess - Traditional Students5 Spring Recess - Traditional Students6 Spring Recess - Traditional Students7 Spring Recess - Traditional Students8
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
30
May 2028
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 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 Memorial Day Observance30 Weekday in term31 Weekday in term
June 2028
SMTWTFS
1 Weekday in term2 Last day of school3
45678910
11121314151617
1819 Juneteenth2021222324
252627282930

The 2027-28 year in words

Students in Irvine Unified go back on . The year ends on , roughly 41 weeks later, with 180 potential weekdays in between after only the days off listed here are counted out. Because the year opens on a Wednesday, the first week contains three potential weekdays after listed closures; the final week contains four to the Friday finish.

3 breaks are marked on the calendar. Thanksgiving Holiday: to , which is 5 days and 5 weekdays without classes. Students are off for Winter Recess - Year Round & Traditional 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 at 12 days.

Between and there are 35 potential weekdays with no listed closure, the longest such run in this summary. Based only on the exceptions listed here, there are 80 potential weekdays before winter break and 100 after it.

Outside the breaks, 9 holidays are listed: Independence Day Holiday (), Labor Day (), Staff Development Day/Student Holiday (PK-12) (), Veteran's Day Observance (), Martin Luther King Jr. Day Observance (), President’s Day Observance (Washington) (), Staff Development Day/Student Holiday (TK-12) () and Memorial Day Observance (), and 1 more. For a three-day weekend, look at Independence Day Holiday, Labor Day, Staff Development Day/Student Holiday (PK-12), Martin Luther King Jr. Day Observance, President’s Day Observance (Washington), Staff Development Day/Student Holiday (TK-12), Memorial Day Observance and Juneteenth, which sit next to a weekend.

Students stay home on 4 teacher workdays: Staff Development Day (PK-12) (), Teacher Workday: Traditional Schools (), Teacher Workday: Traditional Schools () and Teacher Work Day/Student Holiday (9-12) TRADITIONAL ONLY ().

Of the 3 California districts listed here, 0 start after Irvine Unified, 2 start before it. 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 (Irvine 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 & Traditional1210
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)
Martin Luther King Jr. Day Observance
President’s Day Observance (Washington)
Staff Development Day/Student Holiday (TK-12)
Memorial Day Observance
Juneteenth
Teacher workdays (no students)
DayDate
Staff Development Day (PK-12)
Teacher Workday: Traditional Schools
Teacher Workday: Traditional Schools
Teacher Work Day/Student Holiday (9-12) TRADITIONAL ONLY
Potential weekdays by month, after listed exceptions
MonthPotential weekdays
August 202710
September 202721
October 202720
November 202716
December 202713
January 202819
February 202820
March 202822
April 202815
May 202822
June 20282

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 2026-27 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