2023-2024 Mercer Island High School Calendar
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New Teacher Orientation
Mon, August 19, 2024 - Tue, August 20, 2024
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MIHS PP Day (Full)
Thu, August 22, 2024
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Elem AM/PM PD/Prep
Fri, August 23, 2024
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IMS & Elem AM PD/PM Prep
Fri, August 23, 2024
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Instructional Technology Day (ITD)
Mon, August 26, 2024
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Professional Development/Prep Day (PD)
Tue, August 27, 2024
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First Day of School (Grades 1-12)
Wed, August 28, 2024
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Possible First Day of School for Kindergarten
Thu, August 29, 2024
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Labor Day (No School)
Mon, September 2, 2024
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Possible First Day of School for Kindergarten
Tue, September 3, 2024
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No School (All Students)
Fri, October 11, 2024
K-12 Certificated PD Day (Half)
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First Quarter Ends (MIHS)
Fri, November 1, 2024
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Veterans Day (No School)
Mon, November 11, 2024
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Thanksgiving Day (No School)
Thu, November 28, 2024
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Native American Heritage Day (No School)
Fri, November 29, 2024
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Winter Break (No School)
Mon, December 23, 2024 - Fri, January 3, 2025
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MLK Jr. Day (No School)
Mon, January 20, 2025
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No School (All Students)
Fri, January 24, 2025
Final Exams Week (MIHS)
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No School Quarter Ends (MIHS)
Mon, January 27, 2025
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Elem/MIHS Certificated PD Day (Full)
Mon, January 27, 2025
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President's Day (No School)
Mon, February 17, 2025
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Mid-Winter Break (No School)
Tue, February 18, 2025 - Fri, February 21, 2025
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Second Trimester Ends (IMS/Elem)
Thu, March 13, 2025
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No School (All Students)
Fri, March 14, 2025
MIHS Certificated PD Day (Full)
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Scheduled Weather Makeup Day
Fri, March 28, 2025
Third Quarter Ends (MIHS)
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Spring Break (No School)
Mon, April 14, 2025 - Fri, April 18, 2025
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Scheduled Weather Makeup Day
Fri, May 23, 2025
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Memorial Day (No School)
Mon, May 26, 2025
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Half Day Elem Only; Grading Day
Fri, June 13, 2025
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Last Day of School
Wed, June 18, 2025
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Juneteenth (No School)
Thu, June 19, 2025
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Custodial Tech Day (AM)
Sat, June 28, 2025
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Custodial Tech Day (AM)
Sat, August 9, 2025