Mercer Island School District 2022-2023 Calendar https://mercerisland.tandem.co/ Key dates for Mercer Island School District. en-us 8/22/22 - 8/23/22 New Teacher Orientation https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=363 363-mercerisland@intand.com 8/25/22 Tech. Integration Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=364 364-mercerisland@intand.com 8/26/22 Professional Development Day: Full Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=365 365-mercerisland@intand.com 8/29/22 Teacher Prep. Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=366 366-mercerisland@intand.com 8/30/22 Pre-Service Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=367 367-mercerisland@intand.com 8/31/22 First Day of School: 1-12 Grade https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=368 368-mercerisland@intand.com 9/5/22 Labor Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=346 346-mercerisland@intand.com 9/6/22 First School Day: Kindergarten https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=369 369-mercerisland@intand.com 10/10/22 Columbus Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=347 347-mercerisland@intand.com 10/14/22 Teacher Full PD Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=370 370-mercerisland@intand.com 10/31/22 Halloween https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=348 348-mercerisland@intand.com 11/4/22 First Quarter Ends: MIHS https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=371 371-mercerisland@intand.com 11/6/22 Daylight Saving Time Ends https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=350 350-mercerisland@intand.com 11/10/22 Half-day Elementary: Grading Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=372 372-mercerisland@intand.com 11/11/22 Veteran's Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=349 349-mercerisland@intand.com 11/21/22 - 11/23/22 Elementary Conferences (2.5 days)No School: Elementary Students https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=373 373-mercerisland@intand.com 11/23/22 End of First Trimester (IMS & Elementary) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=374 374-mercerisland@intand.com 11/23/22 IMS/MIHS Student Half-day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=375 375-mercerisland@intand.com 11/23/22 MIHS Regular Start https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=376 376-mercerisland@intand.com 11/23/22 Progress Report Prep. (IMS) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=377 377-mercerisland@intand.com 11/24/22 Thanksgiving https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=351 351-mercerisland@intand.com 11/24/22 - 11/25/22 Thanksgiving Break https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=378 378-mercerisland@intand.com 12/19/22 - 1/2/23 Winter Break https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=379 379-mercerisland@intand.com 12/25/22 Christmas Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=352 352-mercerisland@intand.com 1/1/23 New Year's Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=353 353-mercerisland@intand.com 1/3/23 School Resumes https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=380 380-mercerisland@intand.com 1/16/23 Martin Luther King Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=354 354-mercerisland@intand.com 1/24/23 - 1/27/23 Finals Week: MIHS https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=381 381-mercerisland@intand.com 1/27/23 Second Quarter Ends: MIHS https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=382 382-mercerisland@intand.com 1/30/23 IMS & Elem. PD Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=383 383-mercerisland@intand.com 1/30/23 MIHS https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=384 384-mercerisland@intand.com 2/14/23 Valentine's Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=355 355-mercerisland@intand.com 2/20/23 President's Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=356 356-mercerisland@intand.com 2/21/23 - 2/24/23 Mid-Winter Break https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=385 385-mercerisland@intand.com 3/12/23 Daylight Saving Time Begins https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=357 357-mercerisland@intand.com 3/16/23 Second Trimester Ends (IMS/Elementary) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=386 386-mercerisland@intand.com 3/17/23 IMS & Elem. https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=388 388-mercerisland@intand.com 3/17/23 MIHS Prof. Dev. Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=387 387-mercerisland@intand.com 3/17/23 St. Patrick's Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=358 358-mercerisland@intand.com 3/20/23 Scheduled Weather Makeup Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=389 389-mercerisland@intand.com 4/7/23 Third Quarter Ends: MIHS https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=390 390-mercerisland@intand.com 4/9/23 Easter https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=359 359-mercerisland@intand.com 4/10/23 - 4/14/23 Spring Break https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=391 391-mercerisland@intand.com 5/5/23 Cinco De Mayo https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=360 360-mercerisland@intand.com 5/26/23 Scheduled Weather Make-up Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=392 392-mercerisland@intand.com 5/29/23 Memorial Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=361 361-mercerisland@intand.com 6/9/23 Half-day Elementary: Grading Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=393 393-mercerisland@intand.com 6/19/23 Juneteenth Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=394 394-mercerisland@intand.com 6/23/23 Last Day of School https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=395 395-mercerisland@intand.com 7/4/23 Independence Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=362 362-mercerisland@intand.com