Mercer Island School District Calendar 2027-2028
Complete holiday schedule and key dates for Mercer Island School District for the 2027-2028 academic year. Official district website
School Year Timeline
Key Dates
| Event | Date(s) | Status |
|---|---|---|
| First Day of School (All Students) | August 31, 2027 (Tue) | School Opens |
| Labor Day | September 6, 2027 (Mon) | No School |
| Veterans Day | November 11, 2027 (Thu) | No School |
| Thanksgiving Day | November 25, 2027 (Thu) | No School |
| Native American Heritage Day | November 26, 2027 (Fri) | No School |
| Winter Break | December 20, 2027 - January 2, 2028 | No School |
| Martin Luther King Jr. Day | January 17, 2028 (Mon) | No School |
| Presidents' Day | February 21, 2028 (Mon) | No School |
| Mid-Winter Break | February 22, 2028 - February 25, 2028 | No School |
| Spring Break | April 10, 2028 - April 14, 2028 | No School |
| Memorial Day | May 29, 2028 (Mon) | No School |
| Last Day of School (Half day all students) | June 16, 2028 (Fri) | School Closes |
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Extended Time Off
| Window | Date(s) | Length |
|---|---|---|
| Thanksgiving Day Window | Nov 25–28, 2027Districtwide no-school: Nov 25–26, 2027 · Adjacent weekend: Nov 27–28, 2027 | 4 days |
| Winter Break Window | Dec 18, 2027–Jan 2, 2028Districtwide no-school: Dec 20, 2027–Jan 2, 2028 · Adjacent weekend: Dec 18–19, 2027 | 16 days |
| Mid-Winter Break Window | Feb 19–27, 2028Districtwide no-school: Feb 21–25, 2028 · Adjacent weekend: Feb 19–20, 2028; Feb 26–27, 2028 | 9 days |
| Spring Break Window | Apr 8–16, 2028Districtwide no-school: Apr 10–14, 2028 · Adjacent weekend: Apr 8–9, 2028; Apr 15–16, 2028 | 9 days |
Other Important Dates
| Event | Date(s) |
|---|---|
| First Quarter Ends (MIHS) | October 8, 2027 (Fri) |
| First Trimester Ends (IMS/Elementary) | November 24, 2027 (Wed) |
| Second Quarter Ends (MIHS) | January 21, 2028 (Fri) |
| Second Trimester Ends (IMS/Elementary) | March 17, 2028 (Fri) |
| Third Quarter Ends (MIHS) | March 24, 2028 (Fri) |
Mercer Island School District Calendar 2027-2028 www.washingtonschoolcalendar.com
View the full 2027-2028 school year by month.
Monthly calendar12 months
117. Mercer Island School District
Mercer Island’s four elementary attendance areas reunite at Islander Middle School, then remain together at Mercer Island High School from ninth grade. The district’s compact geography supports extensive arts, athletics, Advanced Placement, world languages and student organizations within a shared high-school community.
Crest Learning Center gives some high-school students a smaller, project-centered setting. Admission requires an additional program decision, and students work with advisors in interdisciplinary classes while remaining connected to Mercer Island High School. Many take selected MIHS courses or participate in its activities, and graduates earn the MIHS diploma. Greenhouses, horticulture, aquaponics, marine science and community projects give Crest an applied character. Crest students remain in the MIHS diploma and activity community even as their daily setting becomes smaller and more applied.
Other options change individual parts of the schedule. MI Online combines asynchronous coursework with regular teacher contact and in-person check-ins. The Career Pathways Hub and WANIC programs connect students to regional training in technology, health care, engineering, media and skilled trades. Mercer Island’s secondary system keeps one comprehensive high-school identity while learning can occur in several places: the main campus, Crest, online courses, college classrooms and regional career sites.
Compared With Washington Districts
Selected highlights from this district calendar and related Washington calendar pages.
Mercer Island School District uses this Spring Break week, while Renton School District (April 3, 2028 - April 7, 2028) and Enumclaw School District (April 17, 2028 - April 21, 2028) use different windows in the related calendar set.
Mercer Island School District starts on this date; Lake Washington School District (August 30, 2027) and Renton School District (August 25, 2027) use different first-day dates in the related calendar set.
Mercer Island School District lists 4 early-release or half-day items that may affect pickup times even when school is in session.
Mercer Island School District ends on this date; Lake Washington School District (June 14, 2028) and Federal Way Public Schools (June 15, 2028) close on different dates in the related calendar set.
Compare key dates with nearby districts
Choose one or two related districts to line up major planning dates with Mercer Island School District.
Related Links
About This Calendar
Data Source: Mercer Island School District Student Calendar 2027-2028 How we verify dates
Disclaimer: This website is not affiliated with Mercer Island School District, OSPI, or any official district body. While we strive for accuracy, always verify important dates with the official district website.