For the 2026–2027 school year, Mountain Grove R-III District publishes its official academic calendar for Missouri. Classes begin Aug 10 and end May 20. All dates listed below are sourced from the district's official publications. Verify with Mountain Grove R-III District before scheduling around them.
Visual Calendar
Official Calendar Images
Official calendar scans for Mountain Grove R-III District. Click any page to open the full-size image.
School Calendar
Interactive Calendar
Mountain Grove R-III District's 2026–2027 academic calendar — holidays, breaks, and key dates.
Month by Month Calendar
- Independence DayJul 4, 2026Event
- First Day of Fall PracticeAug 10, 2026School Opens
- New Teacher OrientationAug 13 — Aug 14Teacher Day
- Teacher In-ServiceAug 17 — Aug 24Teacher Day
- First Day of SchoolAug 25, 2026School Opens
- Labor Day - No SchoolSep 7, 2026No School
- No SchoolSep 14, 2026No School
- No SchoolOct 5, 2026No School
- PD Day - No SchoolOct 12, 2026No School
- End of 1st QuarterOct 16, 2026Grading
- P/T Conference (4:00-6:00 pm)Oct 21, 2026Event
- 1/2 Day - P/T Conference (1:30-6:30 pm)Oct 22, 2026Event
- No SchoolOct 23, 2026No School
- HalloweenOct 31, 2026Event
- No SchoolNov 2, 2026No School
- PD Day - No SchoolNov 16, 2026No School
- Thanksgiving BreakNov 23 — Nov 27No School
- ThanksgivingNov 26, 2026No School
- No SchoolDec 7, 2026No School
- 1/2 Day - End of 1st SemesterDec 18, 2026Grading
- No SchoolDec 21 — Jan 4No School
- Christmas DayDec 25, 2026No School
- New Year's DayJan 1, 2027No School
- PD Day - No SchoolJan 4, 2027No School
- Second Semester BeginsJan 5, 2027Event
- No School / Possible Weather Make Up DayJan 11, 2027No School
- MLK Jr. Day - No SchoolJan 18, 2027No School
- PD Day - No SchoolFeb 1, 2027No School
- No School / Possible Weather Make Up DayFeb 8, 2027No School
- Presidents' Day - No SchoolFeb 15, 2027No School
- No SchoolMar 1, 2027No School
- No School / Possible Weather Make Up DayMar 8, 2027No School
- End of 3rd QuarterMar 12, 2027Grading
- PD Day - No SchoolMar 15, 2027No School
- No SchoolMar 26, 2027No School
- EasterMar 28, 2027Event
- No SchoolMar 29, 2027No School
- No SchoolApr 5, 2027No School
- No School / Possible Weather Make Up DayApr 19, 2027No School
- No SchoolMay 10, 2027No School
- HS GraduationMay 14, 2027Event
- 1/2 Day - Last Day of SchoolMay 20, 2027School Closes
- Possible Weather Make Up DayMay 21, 2027Event
- Memorial DayMay 31, 2027No School
- Summer SchoolJun 1 — Jun 25Event
About the District
School Information
Details and contact information for Mountain Grove R-III District MGR3.
Sources and Checks
Where these dates come from
How the 2026–2027 Mountain Grove R-III District calendar on this page was compiled and what to re-check before you rely on it.
- ✓District publication. Dates are taken from the calendar Mountain Grove R-III District published for 2026–2027, shown as images on this page.
- ✓Official website. Cross-checked against mgr3.org.
- ✓Board-approved version is used where the district marks one.
- ✓First and last day match the published calendar.
- ✓Breaks and holidays are listed with their full date ranges.
- ✓Teacher / no-school days are included where the district lists them.
- ✓Changes happen. Districts amend calendars mid-year — confirm with Mountain Grove R-III District before booking around a date.
Common Questions
Frequently Asked Questions
Mountain Grove R-III District Calendar 2026–2027 — important dates and answers.
The first day of school for Mountain Grove R-III District is August 25, 2026.
The 2026-2027 Mountain Grove R-III District calendar does not specifically label a Spring Break. No-school days are scheduled for March 26 and March 29, 2027, with Easter on March 28, 2027.
Christmas Break is from December 21, 2026 through January 4, 2027. Christmas Day is December 25, 2026.
Winter Break runs from December 21, 2026 through January 4, 2027, when schools are closed.
Thanksgiving Break is from November 23-27, 2026. Thanksgiving Day is November 26, 2026.
The last day of school is May 20, 2027, and it is a half day.
There will be no school on September 7, 2026 for Labor Day.
The first quarter ends on October 16, 2026.
Parent/Teacher Conferences are scheduled for October 21, 2026 from 4:00-6:00 p.m. and October 22, 2026 from 1:30-6:30 p.m. October 22 is also a half day.
The first semester ends on December 18, 2026, which is a half day.
The second semester begins on January 5, 2027.
There will be no school on January 18, 2027 for Martin Luther King Jr. Day.
There will be no school on February 15, 2027 for Presidents' Day.
The third quarter ends on March 12, 2027.
Easter is March 28, 2027. The district also has no school on March 26 and March 29, 2027.
High School Graduation is scheduled for May 14, 2027.
Memorial Day is May 31, 2027.
Summer School is scheduled from June 1 through June 25, 2027.
Explore More
Recently Updated Calendars
Other Missouri school district calendars — recently added or updated.