Mercer Island School District 2021-2022 Calendar https://mercerisland.tandem.co/ Key dates for Mercer Island School District. en-us 8/23/21 - 8/24/21 New Teacher Orientation https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=314 314-mercerisland@intand.com 8/26/21 Tech Integration Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=315 315-mercerisland@intand.com 8/27/21 Professional Development Day: Full Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=316 316-mercerisland@intand.com 8/30/21 Teacher Prep Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=317 317-mercerisland@intand.com 8/31/21 Pre-Service Day (1/2 PD & 1/2 Teacher Prep) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=318 318-mercerisland@intand.com 9/1/21 First Day of School: 1-12 Grade https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=319 319-mercerisland@intand.com 9/3/21 First School Day: Kindergarten (1/2 day K) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=320 320-mercerisland@intand.com 9/6/21 Labor Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=297 297-mercerisland@intand.com 9/6/21 Labor Day (No School) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=321 321-mercerisland@intand.com 10/8/21 Student & Staff Half Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=322 322-mercerisland@intand.com 10/11/21 Columbus Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=298 298-mercerisland@intand.com 10/31/21 Halloween https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=299 299-mercerisland@intand.com 11/5/21 First Quarter Ends: MIHS https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=323 323-mercerisland@intand.com 11/7/21 Daylight Saving Time Ends https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=301 301-mercerisland@intand.com 11/11/21 Veteran's Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=300 300-mercerisland@intand.com 11/11/21 Veterans' Day (No School) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=324 324-mercerisland@intand.com 11/15/21 Half-day Elementary: Grading Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=325 325-mercerisland@intand.com 11/22/21 - 11/24/21 Elementary Conferences (2.5 days) No School: Elementary Students https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=326 326-mercerisland@intand.com 11/24/21 End of First Trimester (IMS & Elem) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=327 327-mercerisland@intand.com 11/24/21 IMS/MIHS Student Half-day MIHS Regular Start S M T W T F S Progress Report Prep (IMS) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=328 328-mercerisland@intand.com 11/25/21 Thanksgiving https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=302 302-mercerisland@intand.com 11/25/21 - 11/26/21 Thanksgiving Break (No School) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=329 329-mercerisland@intand.com 12/20/21 - 1/2/22 Winter Break (No School) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=330 330-mercerisland@intand.com 12/25/21 Christmas Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=303 303-mercerisland@intand.com 1/1/22 New Year's Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=304 304-mercerisland@intand.com 1/3/22 School Resumes https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=331 331-mercerisland@intand.com 1/17/22 Martin Luther King Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=305 305-mercerisland@intand.com 1/17/22 Martin Luther King Jr. Day (No School) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=332 332-mercerisland@intand.com 1/18/22 - 1/21/22 Finals Week: MIHS https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=333 333-mercerisland@intand.com 1/21/22 Second Quarter Ends: MIHS https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=334 334-mercerisland@intand.com 1/24/22 IMS & Elem PD Day (No School: Students) MIHS 1/2 AM PD Day (No School: Students) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=335 335-mercerisland@intand.com 2/14/22 Valentine's Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=306 306-mercerisland@intand.com 2/21/22 - 2/25/22 Mid-Winter Break (No School) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=336 336-mercerisland@intand.com 2/21/22 President's Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=307 307-mercerisland@intand.com 3/13/22 Daylight Saving Time Begins https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=308 308-mercerisland@intand.com 3/17/22 Second Trimester Ends (IMS/Elementary) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=337 337-mercerisland@intand.com 3/17/22 St. Patrick's Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=309 309-mercerisland@intand.com 3/18/22 IMS & Elem 1/2 AM PD Day (No School: Students) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=339 339-mercerisland@intand.com 3/18/22 MIHS Prof. Dev Day (No School: Students) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=338 338-mercerisland@intand.com 4/8/22 Third Quarter Ends: MIHS https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=340 340-mercerisland@intand.com 4/11/22 - 4/15/22 Spring Break (No School) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=341 341-mercerisland@intand.com 4/17/22 Easter https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=310 310-mercerisland@intand.com 5/5/22 Cinco De Mayo https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=311 311-mercerisland@intand.com 5/30/22 Memorial Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=312 312-mercerisland@intand.com 5/30/22 Memorial Day (No School) https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=342 342-mercerisland@intand.com 6/10/22 Half-day Elementary: Grading Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=343 343-mercerisland@intand.com 6/17/22 Last Day of School https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=344 344-mercerisland@intand.com 6/20/22 - 6/22/22 Scheduled Weather Make-up Days https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=345 345-mercerisland@intand.com 7/4/22 Independence Day https://mercerisland.tandem.co/index.php?type=key_date&action=details&id=313 313-mercerisland@intand.com