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California school calendar

Jefferson School District Calendar 2026-27

Every holiday, break and early release on the Jefferson School District 2026-27 calendar, from the district's own calendar. Add the dates to your phone with one file.

Also here: the JESD 2027-28 calendar.

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Key dates
  • School starts Tuesday, Aug. 4, 2026 and ends Thursday, May 27, 2027, an early release day.
  • Thanksgiving break: Nov. 23 to 27. Students are out Saturday, Nov. 21 to Sunday, Nov. 29, back Monday, Nov. 30.
  • Winter break: Dec. 21 to Jan. 1. Students are out Saturday, Dec. 19 to Sunday, Jan. 3, back Monday, Jan. 4.
  • Spring break: March 8 to 12. Students are out Saturday, March 6 to Sunday, March 14, back Monday, March 15.
  • 40 early release days for every school. Details below.
  • Every Monday, all schools: early release, 1:30 p.m. dismissal. 30 Mondays from Aug. 10 to May 17. No early release on days with no school.

The JESD 2026-27 calendar

This is the district's own calendar, as JESD publishes it. Tap it to open the full-size image.

The Jefferson School District 2026-2027 Instructional Calendar: weekday month grids from July 2026 to June 2027 with holidays in purple, 1:30 p.m. minimum days in yellow, 2 p.m. minimum days in light green, the first and last student days outlined in red, trimester ends in orange, the parent-teacher conference day in dark green, staff days in pink, red, cyan and blue, monthly school day counts and a total of 180.
Calendar by Jefferson School District. Get the original from the district: the calendar PDF or its calendar page.
District calendar PDF JESD calendar page

Add the JESD calendar to your phone

Pick a file. Each one is an all-day event per day off or half day, and a break is one event across all its days.

Every date First and last day, every day off, every early release and grading period dates. 56 events.
Download .ics
Holidays and breaks Only the days with no school. 12 events.
Download .ics
Early release days Only the half days. 40 events.
Download .ics

On an iPhone

Tap a file above, then tap Add All. The dates go into the calendar you choose.

In Google Calendar

On a computer, open Google Calendar, then Settings, then Import & export. Choose the file and the calendar to add it to. The dates show up on your Android phone too.

In Outlook

Open the downloaded file, or in Outlook on the web go to Add calendar, then Upload from file.

These files are a copy of the calendar today. If the district changes a date, download the file again.

JESD vacations and holidays, 2026-27

Every day with no school for students, from the first day to the last: 12 entries and 33 weekdays in all.

Day offDatesDays of the weekSchool days off
Labor Day HolidaySept. 7Mon1
Parent-teacher conference day (no students) OtherSept. 21Mon1
Fall break BreakOct. 5 to 9Mon to Fri5
Veterans Day HolidayNov. 11Wed1
Thanksgiving break BreakNov. 23 to 27Mon to Fri5
Winter break BreakDec. 21 to Jan. 1Mon to Fri10
Martin Luther King Jr. Day HolidayJan. 18Mon1
Holiday (no school) HolidayFeb. 8Mon1
Presidents' Day HolidayFeb. 15Mon1
Spring break BreakMarch 8 to 12Mon to Fri5
Holiday (no school) HolidayMarch 26Fri1
Holiday (no school) HolidayMarch 29Mon1

JESD early release days

40 early release days in all.

Every Monday, all schools: early release, 1:30 p.m. dismissal. 30 Mondays from Aug. 10 to May 17. No early release on days with no school.

All 30 dates

Aug. 10, Aug. 17, Aug. 24, Aug. 31, Sept. 14, Sept. 28, Oct. 12, Oct. 19, Oct. 26, Nov. 2, Nov. 9, Nov. 16, Nov. 30, Dec. 7, Dec. 14, Jan. 4, Jan. 11, Jan. 25, Feb. 1, Feb. 22, March 1, March 15, March 22, April 5, April 12, April 19, April 26, May 3, May 10 and May 17.

DateDayWhatDismissalWho
Aug. 4TueFirst day minimum day1:30 p.m. dismissalAll schools
Sept. 22TueMinimum day2 p.m. dismissalAll schools
Sept. 23WedMinimum day2 p.m. dismissalAll schools
Sept. 24ThuMinimum day2 p.m. dismissalAll schools
Sept. 25FriMinimum day2 p.m. dismissalAll schools
Oct. 2FriMinimum day2 p.m. dismissalAll schools
Nov. 20FriMinimum day before Thanksgiving break2 p.m. dismissalAll schools
Dec. 18FriMinimum day before winter break2 p.m. dismissalAll schools
March 5FriMinimum day before spring break2 p.m. dismissalAll schools
May 27ThuLast day minimum day1:30 p.m. dismissalAll schools

Calendar notes: what to plan around

Long weekends and breaks

Every stretch of three or more days with no school, counting weekends. A half day next to a weekend adds half a day.

  • 3-day weekend: Saturday, Sept. 5 to Monday, Sept. 7. Labor Day. Back Tuesday, Sept. 8.
  • 3.5-day weekend: Saturday, Sept. 19 to Monday, Sept. 21. Parent-teacher conference day (no students). Tuesday, Sept. 22, an early release day.
  • 2.5-day weekend: Friday, Sept. 25 at early dismissal to Sunday, Sept. 27. Minimum day. Back Monday, Sept. 28.
  • 9.5 days off in a row: Friday, Oct. 2 at early dismissal to Sunday, Oct. 11. Minimum day and fall break. Back Monday, Oct. 12.
  • 9.5 days off in a row: Friday, Nov. 20 at early dismissal to Sunday, Nov. 29. Minimum day before Thanksgiving break and Thanksgiving break. Back Monday, Nov. 30.
  • 16.5 days off in a row: Friday, Dec. 18 at early dismissal to Sunday, Jan. 3. Minimum day before winter break and winter break. Back Monday, Jan. 4.
  • 3-day weekend: Saturday, Jan. 16 to Monday, Jan. 18. Martin Luther King Jr. Day. Back Tuesday, Jan. 19.
  • 3-day weekend: Saturday, Feb. 6 to Monday, Feb. 8. Holiday (no school). Back Tuesday, Feb. 9.
  • 3-day weekend: Saturday, Feb. 13 to Monday, Feb. 15. Presidents' Day. Back Tuesday, Feb. 16.
  • 9.5 days off in a row: Friday, March 5 at early dismissal to Sunday, March 14. Minimum day before spring break and spring break. Back Monday, March 15.
  • 4-day weekend: Friday, March 26 to Monday, March 29. Holiday (no school). Back Tuesday, March 30.

One early release on a Friday or Monday makes a 2.5-day weekend.

Weeks with fewer than five school days

Ten weeks have fewer than five school days, and five weeks have none at all.

Week ofSchool daysWhy
Aug. 34Before the first day
Sept. 74Labor Day
Sept. 214Parent-teacher conference day (no students)
Oct. 50Fall break
Nov. 94Veterans Day
Nov. 230Thanksgiving break
Dec. 210Winter break
Dec. 280Winter break
Jan. 184Martin Luther King Jr. Day
Feb. 84Holiday (no school)
Feb. 154Presidents' Day
March 80Spring break
March 224Holiday (no school)
March 294Holiday (no school)
May 244After the last day

Makeup days

The calendar names no makeup days. If school closes for weather, the district announces how the day is made up.

Also worth knowing

  • School is open on a federal holiday: Columbus Day (Monday, Oct. 12). Banks, post offices and many offices close; school does not.
  • The calendar prints no testing dates.
  • After the last day, the calendar still shows Teachers' last day (half day) (May 28), Memorial Day (May 31) and Juneteenth (June 18). Students are already out.

First and last day of school

Aug. 4First day, Tuesday
May 27Last day, Thursday
180School days, by our count
33Weekdays off between them

The first day of school is Tuesday, Aug. 4, 2026. The last day is Thursday, May 27, 2027, with early dismissal.

Teachers start sooner. Staff days before school run July 30 to Aug. 3.

Grading periods

The calendar marks the ends of the first two trimesters; the third runs to the last day of school.

PeriodDatesSchool days
1st trimesterAug. 4 to Nov. 662
2nd trimesterNov. 9 to Feb. 2661
3rd trimesterMarch 1 to May 2757

What the district notes

  • Every Monday from Aug. 10 to May 17 is a minimum day with 1:30 p.m. release. Minimum days before breaks end at 2 p.m.
  • The calendar counts 180 instructional days.
  • The district says it aligns its calendar closely with Tracy Unified School District, since many families have students in both.
  • The board approved this calendar April 7, 2026. The district has also posted its 2027-28 calendar.

Common questions

When does JESD start in 2026?

The first day of school for Jefferson School District is Tuesday, Aug. 4, 2026.

When is the last day of school for JESD in 2027?

The last day for students is Thursday, May 27, 2027. It is an early release day.

When is winter break for JESD?

Winter break runs Monday, Dec. 21 to Friday, Jan. 1. Counting weekends, students are out Saturday, Dec. 19 to Sunday, Jan. 3 and go back Monday, Jan. 4.

When is spring break for JESD?

Spring break runs Monday, March 8 to Friday, March 12. Counting weekends, students are out Saturday, March 6 to Sunday, March 14 and go back Monday, March 15.

When is Thanksgiving break for JESD?

Thanksgiving break runs Monday, Nov. 23 to Friday, Nov. 27. Counting weekends, students are out Saturday, Nov. 21 to Sunday, Nov. 29 and go back Monday, Nov. 30.

Does JESD have early release days in 2026-27?

Yes. Tuesday, Aug. 4 (1:30 p.m. dismissal), Tuesday, Sept. 22 (2 p.m. dismissal), Wednesday, Sept. 23 (2 p.m. dismissal), Thursday, Sept. 24 (2 p.m. dismissal), Friday, Sept. 25 (2 p.m. dismissal), Friday, Oct. 2 (2 p.m. dismissal), Friday, Nov. 20 (2 p.m. dismissal), Friday, Dec. 18 (2 p.m. dismissal), Friday, March 5 (2 p.m. dismissal) and Thursday, May 27 (1:30 p.m. dismissal) are for every school. Every Monday, all schools: early release, 1:30 p.m. dismissal. 30 Mondays from Aug. 10 to May 17. No early release on days with no school.

How do I put the JESD calendar on my phone?

Download one of the .ics files on this page. On an iPhone, open it and tap Add All. On Android or a computer, import it into Google Calendar or Outlook.

How we checked these dates

We read every date off the district's own calendar twice: once from the PDF's text and once from the image, cell by cell against its legend. Then we checked each one against the district's Academic Calendar page.

Every weekday on this page matches its date. If the district changes its calendar, its page is the final word.

Where each date is on the district's calendar
  • First day, Aug. 4: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, August grid, 4 outlined in red (Students First Day) and yellow (Minimum Day, 1:30 pm Release). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Key Dates: "Students first day | August 4, 2026".
  • Last day, May 27: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, May grid, 27 outlined in red (Students Last Day) and yellow (Minimum Day, 1:30 pm Release). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Key Dates: "Students last day | May 27, 2027".
  • Staff training day (virtual), July 30: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, July grid, 30 in red (Virtual Full Day Keenan). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Key Dates: "Virtual full day Keenan | July 30, 2026".
  • Teachers' first day, July 31: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, July grid, 31 in cyan (Teacher First Day/ Full Day). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Key Dates: "Teacher first day / full day | July 31, 2026".
  • Professional development day (no students), Aug. 3: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, August grid, 3 in pink (Professional Development Day, no students).
  • Labor Day, Sept. 7: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, September grid, 7 in purple (Holidays, purple). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), September summary: "Holiday: September 7".
  • Parent-teacher conference day (no students), Sept. 21: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, September grid, 21 in dark green (P/T Conference, no students). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Key Dates: "P/T Conference, no students | September 21, 2026".
  • Fall break, Oct. 5 to 9: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, October grid, 5 to 9 in purple (Holidays, purple). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Key Dates: "Fall break | October 5-9, 2026".
  • Veterans Day, Nov. 11: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, November grid, 11 in purple (Holidays, purple). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), November summary: "Holiday: November 11".
  • Thanksgiving break, Nov. 23 to 27: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, November grid, 23 to 27 in purple (Holidays, purple). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Key Dates: "Thanksgiving break | November 23-27, 2026".
  • Winter break, Dec. 21 to Jan. 1: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, December grid, 21 to 25 and 28 to 31 in purple; January grid, 1 in purple (Holidays, purple). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Key Dates: "Winter break | December 21, 2026-January 1, 2027".
  • Martin Luther King Jr. Day, Jan. 18: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, January grid, 18 in purple (Holidays, purple). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), January summary: "Holiday: January 18".
  • Holiday (no school), Feb. 8: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, February grid, 8 in purple (Holidays, purple). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), February summary: "Holidays: February 8 and 15".
  • Presidents' Day, Feb. 15: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, February grid, 15 in purple (Holidays, purple). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), February summary: "Holidays: February 8 and 15".
  • Spring break, March 8 to 12: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, March grid, 8 to 12 in purple (Holidays, purple). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Key Dates: "Spring break | March 8-12, 2027".
  • Holiday (no school), March 26: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, March grid, 26 in purple (Holidays, purple); March count 16.
  • Holiday (no school), March 29: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, March grid, 29 in purple (Holidays, purple). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), March summary: "Holiday: March 29".
  • Teachers' last day (half day), May 28: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, May grid, 28 in blue (Teacher Last Day/ Half Day). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Key Dates: "Teacher last day / half day | May 28, 2027".
  • Memorial Day, May 31: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, May grid, 31 in purple (Holidays, purple). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), May summary: "Holiday: May 31".
  • Juneteenth, June 18: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, June grid, 18 in purple (Holidays, purple).
  • First day minimum day, Aug. 4: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, August grid, 4 in yellow (Minimum Day (1:30 pm Release), yellow), outlined red (Students First Day). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), August summary: "Minimum day, 1:30 p.m. release: August 4, 10, 17, 24, and 31".
  • Minimum day, Sept. 22: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, September grid, 22 in light green (Minimum Day (2 pm Release), light green). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Key Dates: "Minimum day, 2:00 p.m. release | September 22-25, 2026".
  • Minimum day, Sept. 23: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, September grid, 23 in light green (Minimum Day (2 pm Release), light green). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Key Dates: "Minimum day, 2:00 p.m. release | September 22-25, 2026".
  • Minimum day, Sept. 24: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, September grid, 24 in light green (Minimum Day (2 pm Release), light green). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Key Dates: "Minimum day, 2:00 p.m. release | September 22-25, 2026".
  • Minimum day, Sept. 25: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, September grid, 25 in light green (Minimum Day (2 pm Release), light green). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Key Dates: "Minimum day, 2:00 p.m. release | September 22-25, 2026".
  • Minimum day, Oct. 2: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, October grid, 2 in light green (Minimum Day (2 pm Release), light green). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Key Dates: "Minimum day, 2:00 p.m. release | October 2, 2026".
  • Minimum day before Thanksgiving break, Nov. 20: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, November grid, 20 in light green (Minimum Day (2 pm Release), light green). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Key Dates: "Minimum day, 2:00 p.m. release | November 20, 2026".
  • Minimum day before winter break, Dec. 18: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, December grid, 18 in light green (Minimum Day (2 pm Release), light green). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Key Dates: "Minimum day, 2:00 p.m. release | December 18, 2026".
  • Minimum day before spring break, March 5: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, March grid, 5 in light green (Minimum Day (2 pm Release), light green). Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Key Dates: "Minimum day, 2:00 p.m. release | March 5, 2027".
  • Last day minimum day, May 27: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, May grid, 27 in yellow (Minimum Day (1:30 pm Release), yellow), outlined red (Students Last Day).
  • Monday minimum day, every Monday: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, every Monday school day from Aug. 10 to May 17 in yellow (Minimum Day (1:30 pm Release), yellow): Aug. 10, 17, 24, 31; Sept. 14, 28; Oct. 12, 19, 26; Nov. 2, 9, 16, 30; Dec. 7, 14; Jan. 4, 11, 25; Feb. 1, 22; March 1, 15, 22; April 5, 12, 19, 26; May 3, 10, 17. May 24 is not shaded. Also: Jefferson School District Academic Calendar page (2026-2027 Calendar Summary and Key Dates tables), Calendar Summary rows: "Minimum day, 1:30 p.m. release" on Aug. 10, 17, 24, 31; Sept. 28; Oct. 12, 19, 26; Nov. 9, 16, 30; Dec. 7, 14; Jan. 4, 11, 25; Feb. 1, 22; March 1, 15, 22; April 5, 12, 19, 26; May 3, 10, 17.
  • 1st trimester: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, November grid, 6 in orange (End of First/Second Trimester).
  • 2nd trimester: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, February grid, 26 in orange (End of First/Second Trimester).
  • 3rd trimester: Jefferson School District 2026-2027 Instructional Calendar (PDF), page 1, legend "End of First/Second Trimester" (first two marked Nov. 6 and Feb. 26); May grid, 27 outlined red (Students Last Day).