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RIVERDALE C.U.S.D. #100 IL Calendar 26-27

  • 2026/27
  • Illinois
  • 2 teacher days

The RIVERDALE C.U.S.D. #100 2026–27 school year runs from Aug 20, 2026 to Dec 18, 2026. Breaks include Thanksgiving break Nov 25-27, winter break Dec 21 - Jan 4, and spring break Mar 15-19. The table below lists all teacher workdays, early release days, and holidays. Download the PDF calendar, or read the FAQs.

School year starts Thu, Aug 20, 2026 First Student Day (6th-8th)
School year ends Tue, May 25, 2027 Last Student Day
Next key date Thu, Aug 20, 2026 Counts down once the school year is under way

RIVERDALE C.U.S.D. #100 2026-27 calendar

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RIVERDALE C.U.S.D. #100 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 3, 2026 — New Family In-Person Registration
  • Aug 17-19, 2026 — Teacher Institute (No School for Students)
  • Aug 17, 2026 — Freshman Orientation
  • Aug 17, 2026 — 6th Grade Open House
  • Aug 18, 2026 — 7th-8th Grade Open House

September 2026

  • Sep 7, 2026 — Labor Day (No School)
  • Sep 18, 2026 — Homecoming (1 Hour Early Dismissal)
  • Sep 23, 2026 — Half-day School Improvement

October 2026

  • Oct 16, 2026 — 1st Quarter Ends
  • Oct 21-22, 2026 — Parent/Teacher Conferences
  • Oct 23, 2026 — Full-day Parent/Teacher Conferences (No School)

November 2026

  • Nov 13, 2026 — Half-day School Improvement
  • Nov 25-27, 2026 — Thanksgiving Break

December 2026

  • Dec 18, 2026 — 2nd Quarter Ends
  • Dec 18, 2026 — Last Student Day Before Break
  • Dec 21, 2026 - Jan 4, 2027 — Winter Break

January 2027

  • Dec 21, 2026 - Jan 4, 2027 — Winter Break
  • Jan 4, 2027 — Teacher Institute (No School for Students)
  • Jan 5, 2027 — Students Return
  • Jan 18, 2027 — Martin Luther King Jr. Birthday (No School)

February 2027

  • Feb 5, 2027 — Half-day School Improvement
  • Feb 15, 2027 — Presidents' Day (No School)

March 2027

  • Mar 1-2, 2027 — Pre-K Screening
  • Mar 12, 2027 — 3rd Quarter Ends
  • Mar 12, 2027 — Half-day School Improvement
  • Mar 15-19, 2027 — Spring Break
  • Mar 26, 2027 — Good Friday (No School)

April 2027

  • Apr 7, 2027 — Half-day School Improvement

May 2027

  • May 1, 2027 — Prom Dance
  • May 4, 2027 — Pre-K Screening
  • May 5, 2027 — Half-day School Improvement
  • May 10, 2027 — Senior Award Night
  • May 16, 2027 — Graduation

June 2027

  • Jun 1-2, 2027 — Emergency Day(s) (Use as Needed)

July 2027

RIVERDALE C.U.S.D. #100 teacher and staff days 2026/27

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

  • Aug 17-19, 2026 Teacher Institute (No School for Students) District source
  • Jan 4, 2027 Teacher Institute (No School for Students) District source

RIVERDALE C.U.S.D. #100 breaks and holidays

School is closed to students on these dates.

  • Sep 7, 2026 Labor Day (No School) Holiday
  • Nov 25-27, 2026 Thanksgiving Break Break
  • Dec 21, 2026 - Jan 4, 2027 Winter Break Break
  • Jan 18, 2027 Martin Luther King Jr. Birthday (No School) Holiday
  • Feb 15, 2027 Presidents' Day (No School) Holiday
  • Mar 15-19, 2027 Spring Break Break
  • Mar 26, 2027 Good Friday (No School) Holiday
  • May 31, 2027 Memorial Day (No School) Holiday

Your checked 2026/27 RIVERDALE C.U.S.D. #100 planning calendar

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

Useful now47 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 12, 2026.
Full term dates table

RIVERDALE C.U.S.D. #100 2026–27 calendar dates

DateEvent
Aug 3, 2026New Family In-Person Registration
Aug 17-19, 2026Teacher Institute (No School for Students)
Aug 17, 2026Freshman Orientation
Aug 17, 20266th Grade Open House
Aug 18, 20267th-8th Grade Open House
Aug 19, 2026Elementary Back to School Conferences
Aug 19, 20269th-12th Grade Open House
Aug 20, 2026Elementary Back to School Conferences
Aug 20, 2026First Student Day (6th-8th)
Aug 20, 2026First Student Day (9th-12th)
Aug 21, 2026First Student Day (K-5th)
Aug 24, 2026First Student Day (Pre-K)
Sep 7, 2026Labor Day (No School)
Sep 18, 2026Homecoming (1 Hour Early Dismissal)
Sep 23, 2026Half-day School Improvement
Oct 16, 20261st Quarter Ends
Oct 21-22, 2026Parent/Teacher Conferences
Oct 23, 2026Full-day Parent/Teacher Conferences (No School)
Nov 13, 2026Half-day School Improvement
Nov 25-27, 2026Thanksgiving Break
Dec 18, 20262nd Quarter Ends
Dec 18, 2026Last Student Day Before Break
Dec 21, 2026 - Jan 4, 2027Winter Break
Jan 4, 2027Teacher Institute (No School for Students)
Jan 5, 2027Students Return
Jan 18, 2027Martin Luther King Jr. Birthday (No School)
Feb 5, 2027Half-day School Improvement
Feb 15, 2027Presidents' Day (No School)
Mar 1-2, 2027Pre-K Screening
Mar 12, 20273rd Quarter Ends
Mar 12, 2027Half-day School Improvement
Mar 15-19, 2027Spring Break
Mar 26, 2027Good Friday (No School)
Apr 7, 2027Half-day School Improvement
May 1, 2027Prom Dance
May 4, 2027Pre-K Screening
May 5, 2027Half-day School Improvement
May 10, 2027Senior Award Night
May 16, 2027Graduation
May 20, 20278th Grade Promotion
May 20, 2027Last Pre-K Student Day
May 25, 2027Half-day School Improvement
May 25, 2027Last Student Day
May 25, 20274th Quarter Ends
May 26-28, 2027Emergency Day(s) (Use as Needed)
May 31, 2027Memorial Day (No School)
Jun 1-2, 2027Emergency Day(s) (Use as Needed)

RIVERDALE C.U.S.D. #100 Calendar 26-27 Revised FAQs

When is the first day of school in RIVERDALE C.U.S.D. #100 for 2026-2027?
The first day of school for students in grades 6-12 is August 20, 2026. The first day for K-5 students is August 21, 2026, and the first day for Pre-K students is August 24, 2026.
When is Spring Break in RIVERDALE C.U.S.D. #100 for 2026-2027?
Spring Break is scheduled from March 15-19, 2027. Students return to school after the break.
When is Christmas Break in RIVERDALE C.U.S.D. #100 for 2026-2027?
Christmas Break begins on December 21, 2026 and continues through January 4, 2027.
When is Winter Break in RIVERDALE C.U.S.D. #100 for 2026-2027?
Winter Break is observed from December 21, 2026, through January 4, 2027. Students return on January 5, 2027.
When is Thanksgiving Break in RIVERDALE C.U.S.D. #100 for 2026-2027?
Thanksgiving Break is scheduled for November 25-27, 2026. There is no school during these dates.
When is the last day of school in RIVERDALE C.U.S.D. #100 for 2026-2027?
The last student day for the 2026-2027 school year is May 25, 2027, which is also the end of the fourth quarter.
When is Labor Day in RIVERDALE C.U.S.D. #100 for 2026-2027?
Labor Day is observed on September 7, 2026. There is no school on this day.
When are Parent-Teacher Conferences in RIVERDALE C.U.S.D. #100 for 2026-2027?
Parent-Teacher Conferences are scheduled for October 21-22, 2026, with a full-day conference and no school on October 23, 2026.
When does the first semester end in RIVERDALE C.U.S.D. #100 for 2026-2027?
The first semester ends on December 18, 2026, which is also the last student day before Winter Break.
When is Martin Luther King Jr. Day in RIVERDALE C.U.S.D. #100 for 2026-2027?
Martin Luther King Jr. Day is observed on January 18, 2027. There is no school on this holiday.
When is Presidents' Day in RIVERDALE C.U.S.D. #100 for 2026-2027?
Presidents' Day falls on February 15, 2027. Students and staff do not attend school on this day.
When is Good Friday in RIVERDALE C.U.S.D. #100 for 2026-2027?
Good Friday is observed on March 26, 2027. There is no school on this day.
When does the third quarter end in RIVERDALE C.U.S.D. #100 for 2026-2027?
The third quarter ends on March 12, 2027.
When is Graduation in RIVERDALE C.U.S.D. #100 for 2026-2027?
Graduation is scheduled for May 16, 2027.
When is 8th Grade Promotion in RIVERDALE C.U.S.D. #100 for 2026-2027?
The 8th Grade Promotion ceremony will take place on May 20, 2027.
Are there emergency days built into the RIVERDALE C.U.S.D. #100 Calendar 2026-2027?
Yes. Emergency days are reserved for May 26-28, 2027 and June 1-2, 2027, if needed.

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RIVERDALE C.U.S.D. #100 calendar FAQs

When is the first day of school in RIVERDALE C.U.S.D. #100 for 2026-2027?
The first day of school for students in grades 6-12 is August 20, 2026. The first day for K-5 students is August 21, 2026, and the first day for Pre-K students is August 24, 2026.
When is Spring Break in RIVERDALE C.U.S.D. #100 for 2026-2027?
Spring Break is scheduled from March 15-19, 2027. Students return to school after the break.
When is Christmas Break in RIVERDALE C.U.S.D. #100 for 2026-2027?
Christmas Break begins on December 21, 2026 and continues through January 4, 2027.
When is Winter Break in RIVERDALE C.U.S.D. #100 for 2026-2027?
Winter Break is observed from December 21, 2026, through January 4, 2027. Students return on January 5, 2027.
When is Thanksgiving Break in RIVERDALE C.U.S.D. #100 for 2026-2027?
Thanksgiving Break is scheduled for November 25-27, 2026. There is no school during these dates.
When is the last day of school in RIVERDALE C.U.S.D. #100 for 2026-2027?
The last student day for the 2026-2027 school year is May 25, 2027, which is also the end of the fourth quarter.
When is Labor Day in RIVERDALE C.U.S.D. #100 for 2026-2027?
Labor Day is observed on September 7, 2026. There is no school on this day.
When are Parent-Teacher Conferences in RIVERDALE C.U.S.D. #100 for 2026-2027?
Parent-Teacher Conferences are scheduled for October 21-22, 2026, with a full-day conference and no school on October 23, 2026.
When does the first semester end in RIVERDALE C.U.S.D. #100 for 2026-2027?
The first semester ends on December 18, 2026, which is also the last student day before Winter Break.
When is Martin Luther King Jr. Day in RIVERDALE C.U.S.D. #100 for 2026-2027?
Martin Luther King Jr. Day is observed on January 18, 2027. There is no school on this holiday.
When is Presidents' Day in RIVERDALE C.U.S.D. #100 for 2026-2027?
Presidents' Day falls on February 15, 2027. Students and staff do not attend school on this day.
When is Good Friday in RIVERDALE C.U.S.D. #100 for 2026-2027?
Good Friday is observed on March 26, 2027. There is no school on this day.
When does the third quarter end in RIVERDALE C.U.S.D. #100 for 2026-2027?
The third quarter ends on March 12, 2027.
When is Graduation in RIVERDALE C.U.S.D. #100 for 2026-2027?
Graduation is scheduled for May 16, 2027.
When is 8th Grade Promotion in RIVERDALE C.U.S.D. #100 for 2026-2027?
The 8th Grade Promotion ceremony will take place on May 20, 2027.
Are there emergency days built into the RIVERDALE C.U.S.D. #100 Calendar 2026-2027?
Yes. Emergency days are reserved for May 26-28, 2027 and June 1-2, 2027, if needed.

Dates can change after publication. Read our calendar disclaimer.