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Irvine High 2026-2027 School Calendar Holidays, breaks, and no school days

Grades 9–12 · Irvine, CA · Irvine Unified

Next no-school day
Monday
October 12
Professional Development Day
No-school days
12 weekdays
9 single days + 3 break days
First day
Tuesday
August 18
2026
Last day
Friday
June 4
2027
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School year at a glance

First Day Last Day No School Break Early Release Late Start School Day
August 2026
SuMoTuWeThFrSa
1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31
September 2026
SuMoTuWeThFrSa
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30
October 2026
SuMoTuWeThFrSa
1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30 31
November 2026
SuMoTuWeThFrSa
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30
December 2026
SuMoTuWeThFrSa
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31
January 2027
SuMoTuWeThFrSa
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31
February 2027
SuMoTuWeThFrSa
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28
March 2027
SuMoTuWeThFrSa
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30 31
April 2027
SuMoTuWeThFrSa
1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30
May 2027
SuMoTuWeThFrSa
1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31
June 2027
SuMoTuWeThFrSa
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30

All 2026-2027 dates

No-school days, breaks and schedule changes, month by month.

August 2026

  • Professional Development Day Friday, August 14th No school
  • First Day of School Tuesday, August 18th First day
  • Late Start Monday, August 24th Late start
  • Late Start Monday, August 31st Late start

September 2026

  • Labor Day Monday, September 7th No school
  • Early Release Thursday, September 10th Early release
  • Early Release Friday, September 11th Early release
  • Late Start Monday, September 14th Late start
  • Late Start Monday, September 21st Late start
  • Late Start Monday, September 28th Late start

October 2026

  • Late Start Monday, October 5th Late start
  • Professional Development Day Monday, October 12th No school
  • Early Release Thursday, October 15th Early release
  • Late Start Friday, October 16th Late start
  • Late Start Monday, October 19th Late start
  • Late Start Monday, October 26th Late start

November 2026

  • Late Start Monday, November 2nd Late start
  • Veterans Day Wednesday, November 11th No school
  • Late Start Monday, November 16th Late start
  • Thanksgiving Break Monday, November 23rd · 1 school day off Break
  • Late Start Monday, November 30th Late start

December 2026

  • Late Start Monday, December 7th Late start
  • Late Start Monday, December 14th Late start
  • Early Release Thursday, December 17th Early release
  • Early Release Friday, December 18th Early release
  • Winter Break Monday, December 21st · 1 school day off Break

January 2027

  • Late Start Monday, January 4th Late start
  • Student Free Day Friday, January 15th No school
  • Martin Luther King Jr. Day Monday, January 18th No school
  • Late Start Monday, January 25th Late start

February 2027

  • Late Start Monday, February 1st Late start
  • Professional Development Day Friday, February 12th No school
  • Presidents' Day Monday, February 15th No school
  • Late Start Monday, February 22nd Late start

March 2027

  • Local Holiday Monday, March 1st No school
  • Late Start Monday, March 8th Late start
  • Late Start Monday, March 15th Late start
  • Late Start Monday, March 22nd Late start
  • Early Release Tuesday, March 23rd Early release
  • Early Release Wednesday, March 24th Early release
  • Early Release Thursday, March 25th Early release
  • Early Release Friday, March 26th Early release
  • Spring Break Monday, March 29th · 1 school day off Break

April 2027

  • Late Start Monday, April 5th Late start
  • Late Start Monday, April 12th Late start
  • Late Start Monday, April 19th Late start
  • Late Start Monday, April 26th Late start

May 2027

  • Late Start Monday, May 3rd Late start
  • Late Start Monday, May 10th Late start
  • Late Start Monday, May 17th Late start
  • Late Start Monday, May 24th Late start
  • Memorial Day Monday, May 31st No school

June 2027

  • Last Day of School Friday, June 4th Last day
  • Juneteenth Friday, June 18th No school

Frequently Asked Questions

When is there no school at Irvine High in 2026-2027?
There's no school at Irvine High on 11 single days in 2026-2027: Friday, August 14 (Professional Development Day); Monday, September 7 (Labor Day); Monday, October 12 (Professional Development Day); Wednesday, November 11 (Veterans Day); Friday, January 15 (Student Free Day); Monday, January 18 (Martin Luther King Jr. Day); Friday, February 12 (Professional Development Day); Monday, February 15 (Presidents' Day); Monday, March 1 (Local Holiday); Monday, May 31 (Memorial Day), and one more. Breaks: Thanksgiving Break (Monday, November 23), Winter Break (Monday, December 21) and Spring Break (Monday, March 29).
When is the first and last day of school at Irvine High in 2026-2027?
The first day of school at Irvine High is Tuesday, August 18, 2026. The last day of school is Friday, June 4, 2027. That's a school year of about 42 weeks.
How many school days are in the 2026-2027 school year at Irvine High?
About 197 school days: the weekdays from the first day to the last day, minus days off.
How many days off does Irvine High have in 2026-2027?
About 12 weekdays with no school, not counting weekends or summer. That's three weekdays of breaks plus nine single days off. There are also eight long weekends, where a Friday or Monday off joins the weekend.
What is the longest break at Irvine High in 2026-2027?
Thanksgiving Break is the longest: three days in a row with no school, from Saturday, November 21 to Monday, November 23, including weekends (one school day off).
What is the longest stretch of school without a day off?
Forty-four school days in a row (about nine weeks), from Tuesday, March 30 to Friday, May 28.
Which month has the most days off at Irvine High?
November, January, February and March each have the most, with two weekdays off.
Does Irvine High have early-release or late-start days?
Yes, the 2026-2027 calendar has nine early-release days and 29 late-start days. They're marked on the calendar above.

Counts are approximate and based on the published calendar.

Source: Irvine High, last updated Sept. 2026. Dates can change, so confirm with the school before making plans.

All 2026-2027 school calendars

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