Mercer Island High School Calendar

New Teacher Orientation

Mon, August 21, 2023 – Tue, August 22, 2023

MIHS PD Day (Full)

Thu, August 24, 2023

Professional Development Day for MIHS

MIHS PD Day (Full)

Fri, August 25, 2023

Professional Development Day for MIHS

MS & Elem AM PD/PM Prep

Mon, August 28, 2023

Morning Professional Development/Afternoon Prep

First Day of School

Mon, August 28, 2023

Instructional Technology PD Day

Tue, August 29, 2023

Professional Development in Instructional Tech

Preservice Day (AM Only)

Wed, August 30, 2023

AM Preservice Day

First Day of School

Wed, August 30, 2023

School/District Opens

Labor Day

Sat, September 2, 2023

Labor Day (No School)

Mon, September 4, 2023

Labor Day

Mon, September 4, 2023

School/District Closed

Start of School

Thu, September 7, 2023

Rosh Hashanah

Fri, September 15, 2023 – Sun, September 17, 2023

Observance begins at dusk

Yom Kippur

Sun, September 24, 2023 – Mon, September 25, 2023

Observance begins at dusk

Rosh Hashanah

Mon, October 2, 2023 – Wed, October 4, 2023

No School Students; K-12 Certificated PD Day (Full)

Mon, October 9, 2023

Professional Development Day for K-12 (Full Day)

Indigenous Peoples’ Day

Mon, October 9, 2023

Normal classroom procedures

No School

Mon, October 9, 2023

No inclusive Pre-School Community Services

Yom Kippur

Wed, October 11, 2023

Indigenous Peoples’ Day

Sat, October 14, 2023

Diwali

Tue, October 31, 2023

First Quarter Ends (MIHS)

Thu, November 2, 2023

½ Day Elem Only; Elem Grading Day

Thu, November 9, 2023

Half Day for Elementary, Grading Day

Half Day

Thu, November 9, 2023

No PM class or extracurricular; No PM Community Services

Veterans Day (No School)

Fri, November 10, 2023

Veterans Day Observed

Fri, November 10, 2023

School/District Closed

No School

Sat, November 11, 2023

Veterans Day

Sat, November 11, 2023

Diwali

Sun, November 12, 2023

Normal classroom procedures

Elem Conferences (2.5 Days)/Elem Free First Time Ends (MS/Elem)

Mon, November 20, 2023 – Wed, November 22, 2023

Elementary School Parent-Teacher Conferences

Preschool Conferences

Mon, November 20, 2023 – Wed, November 22, 2023

No School; No Community Preschool Services

Thanksgiving Day (No School)

Thu, November 23, 2023

Thanksgiving

Thu, November 23, 2023 – Fri, November 24, 2023

School/District Closed

No School

Thu, November 23, 2023 – Fri, November 24, 2023

Native American Heritage Day (No School)

Fri, November 24, 2023

Native American Heritage Day

Fri, November 24, 2023

Normal classroom procedures

Thanksgiving

Tue, November 28, 2023

Native American Heritage Day

Wed, November 29, 2023

Hanukkah

Thu, December 7, 2023 – Fri, December 15, 2023

Observance begins at dusk

Student Half Day (All)

Fri, December 15, 2023

Half Day for All Students

Half Day

Fri, December 15, 2023

No PM session or extracurricular; No PM Community Services

Winter Break (No School)

Mon, December 18, 2023 – Mon, January 1, 2024

Winter Break

No School

Mon, December 18, 2023 – Sun, January 1, 2023

No Community Pre-School Services

Christmas Eve

Sun, December 24, 2023

School/District Closed

Christmas Day

Mon, December 25, 2023

School/District Closed

Hanukkah

Mon, December 25, 2023 – Tue, January 2, 2024

New Years Day

Mon, January 1, 2024

School/District Closed

Martin Luther King Jr. Day (No School)

Mon, January 15, 2024

Martin Luther King, Jr. Day

Mon, January 15, 2024

School/District Closed

Finals Week (MIHS)

Tue, January 16, 2024 – Fri, January 19, 2024

Finals Week at Mercer Island High School

Semester One Ends (MIHS)

Fri, January 19, 2024

K-12 Certificated PD Day (Half)

Mon, January 22, 2024

Half Day Professional Development for K-12

Classified Tech Day (AM)

Mon, January 22, 2024

AM Classified Staff Technology Day

Lunar New Year

Mon, January 29, 2024

School/District Closed

Lunar New Year

Sat, February 10, 2024

Normal classroom procedures

Ash Wednesday

Wed, February 14, 2024

Normal classroom procedures

Presidents’ Day

Sat, February 17, 2024

School/District Closed

Presidents’ Day (No School)

Mon, February 19, 2024

Presidents’ Day

Mon, February 19, 2024

School/District Closed

Mid-Winter Break (No School)

Tue, February 20, 2024 – Fri, February 23, 2024

Mid-Winter Break

Ramadan Begins

Sat, March 2, 2024

Observance begins at dusk or sundown

Ash Wednesday

Tue, March 5, 2024

Ramadan begins

Mon, March 11, 2024

Observance begins at dusk

Student Half Day (All)

Fri, March 15, 2024

Half Day for All Students

Classified Tech Day (AM)

Fri, March 15, 2024

AM Classified Staff Technology Day

Certificated Half Day (All)

Fri, March 15, 2024

Half Day Professional Development for Certificated Staff

Classified Early Release Flex Day

Fri, March 15, 2024

Classified Staff Early Release Flex Day

Nowruz (Persian New Year)

Wed, March 20, 2024

Normal classroom procedures

Nowruz (Persian New Year)

Thu, March 21, 2024

Good Friday

Fri, March 29, 2024

School/District Closed

Eid al-Fitr (End of Ramadan)

Sat, March 30, 2024

Easter

Sun, March 31, 2024

School/District Closed

Third Quarter Ends (MIHS)

Wed, April 3, 2024

Spring Break (No School)

Mon, April 8, 2024 – Fri, April 12, 2024

Spring Break

Eid al-Fitr (End of Ramadan)

Wed, April 10, 2024

Normal classroom procedures

Passover

Fri, April 12, 2024 – Sat, April 20, 2024

Observance begins at dusk or sundown

Good Friday

Thu, April 18, 2024

Easter

Sat, April 20, 2024

Passover

Mon, April 22, 2024 – Tue, April 30, 2024

Observance begins at dusk

Scheduled Weather Makeup Day

Fri, May 24, 2024

Weather Makeup Day

Memorial Day

Sun, May 26, 2024

School/District Closed

Memorial Day (No School)

Mon, May 27, 2024

Memorial Day

Mon, May 27, 2024

School/District Closed

Eid al-Adha (Feast of Sacrifice)

Fri, June 7, 2024

Observance begins at dusk or sundown

Day Elem Only; Elem Grading Day

Fri, June 14, 2024

Elementary Grading Day

Eid al-Adha (Feast of Sacrifice)

Mon, June 17, 2024

Normal classroom procedures

Last Day of School

Tue, June 18, 2024

Last Day of School for Students

Juneteenth (No School)

Wed, June 19, 2024

Juneteenth

Wed, June 19, 2024

Normal classroom procedures

Scheduled Weather Makeup Days

Thu, June 20, 2024 – Fri, June 21, 2024

Scheduled Weather Makeup Days

Independence Day

Thu, July 4, 2024

School/District Closed

New Teacher Orientation

Mon, August 19, 2024 – Tue, August 20, 2024

MIHS PP Day (Full)

Thu, August 22, 2024

Elem AM/PM PD/Prep

Fri, August 23, 2024

IMS & Elem AM PD/PM Prep

Fri, August 23, 2024

Instructional Technology Day (ITD)

Mon, August 26, 2024

Professional Development/Prep Day (PD)

Tue, August 27, 2024

First Day of School (Grades 1-12)

Wed, August 28, 2024

Possible First Day of School for Kindergarten

Thu, August 29, 2024

Labor Day (No School)

Mon, September 2, 2024

Possible First Day of School for Kindergarten

Tue, September 3, 2024

No School (All Students)

Fri, October 11, 2024

K-12 Certificated PD Day (Half)

First Quarter Ends (MIHS)

Fri, November 1, 2024

Veterans Day (No School)

Mon, November 11, 2024

Thanksgiving Day (No School)

Thu, November 28, 2024

Native American Heritage Day (No School)

Fri, November 29, 2024

Winter Break (No School)

Mon, December 23, 2024 – Fri, January 3, 2025

MLK Jr. Day (No School)

Mon, January 20, 2025

No School (All Students)

Fri, January 24, 2025

Final Exams Week (MIHS)

No School Quarter Ends (MIHS)

Mon, January 27, 2025

Elem/MIHS Certificated PD Day (Full)

Mon, January 27, 2025

President’s Day (No School)

Mon, February 17, 2025

Mid-Winter Break (No School)

Tue, February 18, 2025 – Fri, February 21, 2025

Second Trimester Ends (IMS/Elem)

Thu, March 13, 2025

No School (All Students)

Fri, March 14, 2025

MIHS Certificated PD Day (Full)

Scheduled Weather Makeup Day

Fri, March 28, 2025

Third Quarter Ends (MIHS)

Spring Break (No School)

Mon, April 14, 2025 – Fri, April 18, 2025

Scheduled Weather Makeup Day

Fri, May 23, 2025

Memorial Day (No School)

Mon, May 26, 2025

Half Day Elem Only; Grading Day

Fri, June 13, 2025

Last Day of School

Wed, June 18, 2025

Juneteenth (No School)

Thu, June 19, 2025

Custodial Tech Day (AM)

Sat, June 28, 2025

Custodial Tech Day (AM)

Sat, August 9, 2025