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Centennial School District OR Calendar 26-27

  • 2026/27
  • Oregon
  • 6 teacher days

The Centennial School District 2026–27 school year runs from Sep 2, 2026 to Jun 4, 2027. Breaks include winter break Dec 21-31 and spring break Mar 22-26. The table below lists all teacher workdays and holidays. Download the PDF calendar, or read the FAQs.

School year starts Wed, Sep 2, 2026 First Day of School (Grades 1-12, Last Names A-L)
School year ends Wed, Jun 9, 2027 Last Day Grade 8
Next key date Wed, Sep 2, 2026 Counts down once the school year is under way

Centennial School District 2026-27 calendar

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Centennial School District school year calendar

Every published date for 2026–27, colour-coded by what happens that day.

  • First day of school
  • Last day of school
  • Holiday - school closed
  • Break / vacation
  • Teacher / professional day
  • Early release / half day
  • Parent-teacher conference
  • Grading period / report cards
  • Graduation
  • Weather make-up day
  • Other scheduled date

August 2026

  • Aug 26-28, 2026 — Staff Development (PreK-12)
  • Aug 28, 2026 — Orientation (Grades 6 & 9 Only)

September 2026

  • Sep 1, 2026 — Staff Development (PreK-12)
  • Sep 2, 2026 — Semester 1 Begins
  • Sep 2, 2026 — First Day of School (Grades 1-12, Last Names A-L)
  • Sep 3, 2026 — First Day of School (Kindergarten, Last Names M-Z)
  • Sep 4, 2026 — Kindergarten Only

October 2026

  • Oct 9, 2026 — Staff Development (PreK-12)

November 2026

  • Nov 5, 2026 — Mid Semester 1 Mark
  • Nov 6, 2026 — Mid-Semester Prep & Instructional Collaboration
  • Nov 9-10, 2026 — Conferences (PreK-12)
  • Nov 11, 2026 — Holiday
  • Nov 26, 2026 — Holiday

December 2026

  • Dec 21-31, 2026 — Winter Break

January 2027

  • Jan 1, 2027 — Holiday
  • Jan 4, 2027 — 1 Hour Late Start (PreK-12)
  • Jan 18, 2027 — Holiday
  • Jan 22, 2027 — Semester 1 Ends
  • Jan 25, 2027 — Report Card & Semester 2 Prep

February 2027

  • Feb 15, 2027 — Holiday

March 2027

  • Mar 22-26, 2027 — Spring Break

April 2027

  • Apr 5, 2027 — Mid Semester 2 Mark
  • Apr 7, 2027 — Mid-Semester Prep/Conference Prep (High School Only)
  • Apr 8-9, 2027 — Conferences (High School Only)
  • Apr 28, 2027 — Instructional Collaboration/Conference Prep (PreK-8 Only)
  • Apr 29-30, 2027 — Conferences (PreK-12, PreK-8 Only)

May 2027

  • May 3, 2027 — Staff Development
  • May 31, 2027 — Holiday

June 2027

  • Jun 4, 2027 — Last Day Grade 12
  • Jun 9, 2027 — Last Day Grade 8
  • Jun 9, 2027 — Senior Graduation
  • Jun 11, 2027 — Half Day Release (PreK-11)
  • Jun 11, 2027 — Semester 2 Report Preparation

July 2027

Centennial School District teacher and staff days 2026/27

Students normally stay home on these days. Confirm with the district before making plans.

  • Aug 26-28, 2026 Staff Development (PreK-12) District source
  • Sep 1, 2026 Staff Development (PreK-12) District source
  • Oct 9, 2026 Staff Development (PreK-12) District source
  • Nov 27, 2026 Non-Work Day District source
  • May 3, 2027 Staff Development District source
  • Jun 14, 2027 In-Service Day District source

Centennial School District breaks and holidays

School is closed to students on these dates.

  • Sep 7, 2026 Holiday Holiday
  • Nov 11, 2026 Holiday Holiday
  • Nov 26, 2026 Holiday Holiday
  • Dec 21-31, 2026 Winter Break Break
  • Jan 1, 2027 Holiday Holiday
  • Jan 18, 2027 Holiday Holiday
  • Feb 15, 2027 Holiday Holiday
  • Mar 22-26, 2027 Spring Break Break
  • May 31, 2027 Holiday Holiday

Your checked 2026/27 Centennial School District planning calendar

How these dates are put together, and what to double-check before you book anything.

Useful now40 published dates for the 2026–27 school year, laid out month by month.
CheckedTaken from the district’s own published calendar, not retyped from memory.
Kept currentLast updated July 9, 2026.
Full term dates table

Centennial School District 2026–27 calendar dates

DateEvent
Aug 26-28, 2026Staff Development (PreK-12)
Aug 28, 2026Orientation (Grades 6 & 9 Only)
Sep 1, 2026Staff Development (PreK-12)
Sep 2, 2026Semester 1 Begins
Sep 2, 2026First Day of School (Grades 1-12, Last Names A-L)
Sep 3, 2026First Day of School (Kindergarten, Last Names M-Z)
Sep 4, 2026Kindergarten Only
Sep 7, 2026Holiday
Sep 8, 2026First Day of School (All PreK & Kindergarten)
Oct 9, 2026Staff Development (PreK-12)
Nov 5, 2026Mid Semester 1 Mark
Nov 6, 2026Mid-Semester Prep & Instructional Collaboration
Nov 9-10, 2026Conferences (PreK-12)
Nov 11, 2026Holiday
Nov 26, 2026Holiday
Nov 27, 2026Non-Work Day
Dec 21-31, 2026Winter Break
Jan 1, 2027Holiday
Jan 4, 20271 Hour Late Start (PreK-12)
Jan 18, 2027Holiday
Jan 22, 2027Semester 1 Ends
Jan 25, 2027Report Card & Semester 2 Prep
Jan 26, 2027Semester 2 Begins
Feb 15, 2027Holiday
Mar 22-26, 2027Spring Break
Apr 5, 2027Mid Semester 2 Mark
Apr 7, 2027Mid-Semester Prep/Conference Prep (High School Only)
Apr 8-9, 2027Conferences (High School Only)
Apr 28, 2027Instructional Collaboration/Conference Prep (PreK-8 Only)
Apr 29-30, 2027Conferences (PreK-12, PreK-8 Only)
May 3, 2027Staff Development
May 31, 2027Holiday
Jun 4, 2027Last Day Grade 12
Jun 9, 2027Last Day Grade 8
Jun 9, 2027Senior Graduation
Jun 11, 2027Half Day Release (PreK-11)
Jun 11, 2027Semester 2 Report Preparation
Jun 14, 2027In-Service Day
Jun 15, 2027Inclement Weather Make-up Day
Jun 16, 2027Inclement Weather Make-up Day

Centennial School District Calendar 26-27 PDF FAQs

When is the first day of school in Centennial School District for 2026-2027?
The first day of school for students in Centennial School District begins on September 2, 2026, for Grades 1-12 (Last Names A-L). Additional student groups begin on September 3, September 4, and September 8, 2026.
When is Spring Break in Centennial School District for 2026-2027?
Spring Break in Centennial School District is scheduled from March 22 through March 26, 2027.
When is Christmas Break in Centennial School District for 2026-2027?
Christmas Break in Centennial School District begins on December 21, 2026, and continues through December 31, 2026.
When is Winter Break in Centennial School District for 2026-2027?
Winter Break is scheduled from December 21, 2026, through December 31, 2026, with New Year's Day holiday observed on January 1, 2027.
When is Thanksgiving Break in Centennial School District for 2026-2027?
Thanksgiving Break includes November 26, 2026 (Holiday) and November 27, 2026 (Non-Work Day).
When is the last day of school in Centennial School District for 2026-2027?
The last day for Grade 12 students is June 4, 2027. The last day for Grade 8 students is June 9, 2027. A half-day release for Grades PreK-11 is scheduled on June 11, 2027.
When does Semester 1 begin in Centennial School District for 2026-2027?
Semester 1 begins on September 2, 2026.
When does Semester 1 end in Centennial School District for 2026-2027?
Semester 1 ends on January 22, 2027.
When does Semester 2 begin in Centennial School District for 2026-2027?
Semester 2 begins on January 26, 2027.
When is Winter Holiday observed in Centennial School District for 2026-2027?
Students and staff observe New Year's Day as a holiday on January 1, 2027.
When is Mid-Semester 1 marking period in Centennial School District for 2026-2027?
The Mid-Semester 1 Mark is scheduled for November 5, 2026.
When is Mid-Semester 2 marking period in Centennial School District for 2026-2027?
The Mid-Semester 2 Mark is scheduled for April 5, 2027.
When are Parent-Teacher Conferences in Centennial School District for 2026-2027?
Conferences for PreK-12 are scheduled on November 9-10, 2026. Additional conference dates are April 8-9, 2027 and April 29-30, 2027.
When is Memorial Day holiday in Centennial School District for 2026-2027?
Memorial Day is observed on May 31, 2027, and schools are closed.
When is Senior Graduation in Centennial School District for 2026-2027?
Senior Graduation is scheduled for June 9, 2027.

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Centennial School District calendar FAQs

When is the first day of school in Centennial School District for 2026-2027?
The first day of school for students in Centennial School District begins on September 2, 2026, for Grades 1-12 (Last Names A-L). Additional student groups begin on September 3, September 4, and September 8, 2026.
When is Spring Break in Centennial School District for 2026-2027?
Spring Break in Centennial School District is scheduled from March 22 through March 26, 2027.
When is Christmas Break in Centennial School District for 2026-2027?
Christmas Break in Centennial School District begins on December 21, 2026, and continues through December 31, 2026.
When is Winter Break in Centennial School District for 2026-2027?
Winter Break is scheduled from December 21, 2026, through December 31, 2026, with New Year's Day holiday observed on January 1, 2027.
When is Thanksgiving Break in Centennial School District for 2026-2027?
Thanksgiving Break includes November 26, 2026 (Holiday) and November 27, 2026 (Non-Work Day).
When is the last day of school in Centennial School District for 2026-2027?
The last day for Grade 12 students is June 4, 2027. The last day for Grade 8 students is June 9, 2027. A half-day release for Grades PreK-11 is scheduled on June 11, 2027.
When does Semester 1 begin in Centennial School District for 2026-2027?
Semester 1 begins on September 2, 2026.
When does Semester 1 end in Centennial School District for 2026-2027?
Semester 1 ends on January 22, 2027.
When does Semester 2 begin in Centennial School District for 2026-2027?
Semester 2 begins on January 26, 2027.
When is Winter Holiday observed in Centennial School District for 2026-2027?
Students and staff observe New Year's Day as a holiday on January 1, 2027.
When is Mid-Semester 1 marking period in Centennial School District for 2026-2027?
The Mid-Semester 1 Mark is scheduled for November 5, 2026.
When is Mid-Semester 2 marking period in Centennial School District for 2026-2027?
The Mid-Semester 2 Mark is scheduled for April 5, 2027.
When are Parent-Teacher Conferences in Centennial School District for 2026-2027?
Conferences for PreK-12 are scheduled on November 9-10, 2026. Additional conference dates are April 8-9, 2027 and April 29-30, 2027.
When is Memorial Day holiday in Centennial School District for 2026-2027?
Memorial Day is observed on May 31, 2027, and schools are closed.
When is Senior Graduation in Centennial School District for 2026-2027?
Senior Graduation is scheduled for June 9, 2027.

Dates can change after publication. Read our calendar disclaimer.