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Chaffey Joint Union High 2026-2027 School Calendar Holidays, breaks, and no school days

Ontario, CA

Next no-school day
Wednesday
November 11
Veterans Day
No-school days
24 weekdays
5 single days + 19 break days
First day
Thursday
August 6
2026
Last day
Thursday
May 20
2027
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School year at a glance

First Day Last Day No School Break Holiday School Day

Breaks and holidays

Is there school on Veterans Day?

Wed, Nov 11
No school

When is Thanksgiving break 2026?

Nov 23–27
9 days off with weekends

When is winter break 2026?

Dec 21 – Jan 1
16 days off with weekends

Is there school on Martin Luther King Jr. Day?

Mon, Jan 18
No school

Is there school on Presidents' Day?

Mon, Feb 15
No school

When is spring break 2027?

Mar 29 – Apr 2
9 days off with weekends

All 2026-2027 dates

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

August 2026

  • First Day of School Thursday, August 6th First day

September 2026

  • Labor Day Monday, September 7th · Federal holiday No school

October 2026

  • Columbus Day Monday, October 12th · Not on the school calendar Federal holiday

November 2026

  • Veterans Day Wednesday, November 11th · Federal holiday No school
  • Thanksgiving Break Monday, November 23rd – Friday, November 27th · 5 school days off · Includes Thanksgiving Day (federal holiday), Day after Thanksgiving (state holiday) Break

December 2026

  • Winter Break Monday, December 21st – Thursday, December 31st · 9 school days off · Includes Christmas Day (federal holiday) Break

January 2027

  • New Year's Day Friday, January 1st · Federal holiday No school
  • Martin Luther King Jr. Day Monday, January 18th · Federal holiday No school

February 2027

  • Presidents' Day Monday, February 15th · Federal holiday No school

March 2027

  • Spring Break Monday, March 29th – Friday, April 2nd · 5 school days off · Includes Farmworkers Day (state holiday) Break

May 2027

  • Last Day of School Thursday, May 20th Last day
  • Memorial Day Monday, May 31st No school

June 2027

  • Juneteenth Friday, June 18th No school

Schools using this calendar

11 schools follow the Chaffey Joint Union High calendar.

Browse all schools (A–Z)
A
Alta Loma High
C
Chaffey Community DayChaffey District Online HighChaffey HighColony High
E
Etiwanda High
L
Los Osos High
M
Montclair High
O
Ontario High
R
Rancho Cucamonga High
V
Valley View High (Continuation)

Frequently Asked Questions

When is the first and last day of school at Chaffey Joint Union High in 2026-2027?
The first day of school at Chaffey Joint Union High is Thursday, August 6, 2026. The last day of school is Thursday, May 20, 2027. That's a school year of about 41 weeks.
How many school days are in the 2026-2027 school year at Chaffey Joint Union High?
About 182 school days: the weekdays from the first day to the last day, minus days off.
How many days off does Chaffey Joint Union High have in 2026-2027?
About 24 weekdays with no school, not counting weekends or summer. That's 19 weekdays of breaks plus five single days off. There are also four long weekends, where a Friday or Monday off joins the weekend.
What is the longest stretch of school without a day off?
Forty-six school days in a row (about nine weeks), from Tuesday, September 8 to Tuesday, November 10.

Simple Schedule is not affiliated with Chaffey Joint Union High. Confirm important dates with the district or your school.

Source: Chaffey Joint Union High.

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