Seminole I.S.D. 2026-2027 Calendar http://seminoleisd.tandem.co/ Key dates for Seminole I.S.D.. en-us 7/2/26 Holiday http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50416 50416-seminoleisd@intand.com 7/4/26 Independence Day http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50453 50453-seminoleisd@intand.com 7/30/26 New Staff Inservice / Instruction Dept. http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50417 50417-seminoleisd@intand.com 8/3/26 - 8/4/26 New Staff Inservice / Instruction Dept. http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50418 50418-seminoleisd@intand.com 8/5/26 - 8/7/26 All Staff Inservice http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50419 50419-seminoleisd@intand.com 8/10/26 - 8/11/26 All Staff Inservice http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50420 50420-seminoleisd@intand.com 8/12/26 First Day of Instruction http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50421 50421-seminoleisd@intand.com 8/12/26 Start of First Six Weeks http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50422 50422-seminoleisd@intand.com 9/7/26 Holiday - Labor Day http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50409 50409-seminoleisd@intand.com 9/14/26 Staff Development Day - Student Holiday http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50423 50423-seminoleisd@intand.com 9/18/26 End of First Six Weeks http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50424 50424-seminoleisd@intand.com 9/21/26 Start of Second Six Weeks http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50425 50425-seminoleisd@intand.com 10/9/26 Fall Break http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50426 50426-seminoleisd@intand.com 10/12/26 Fall Break http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50427 50427-seminoleisd@intand.com 10/30/26 End of Second Six Weeks http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50428 50428-seminoleisd@intand.com 11/2/26 Staff Development Day - Student Holiday http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50429 50429-seminoleisd@intand.com 11/3/26 Start of Third Six Weeks http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50430 50430-seminoleisd@intand.com 11/23/26 - 11/27/26 Thanksgiving Break http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50431 50431-seminoleisd@intand.com 11/26/26 Thanksgiving Day http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50410 50410-seminoleisd@intand.com 12/18/26 Early Release http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50451 50451-seminoleisd@intand.com 12/18/26 End of Third Six Weeks http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50432 50432-seminoleisd@intand.com 12/21/26 - 12/25/26 Christmas Break http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50433 50433-seminoleisd@intand.com 12/25/26 Christmas Day http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50411 50411-seminoleisd@intand.com 12/28/26 - 1/1/27 Christmas Break http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50434 50434-seminoleisd@intand.com 1/1/27 New Year's Day http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50412 50412-seminoleisd@intand.com 1/4/27 Christmas Break http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50435 50435-seminoleisd@intand.com 1/5/27 Staff Development Day - Student Holiday http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50436 50436-seminoleisd@intand.com 1/6/27 Start of Fourth Six Weeks http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50437 50437-seminoleisd@intand.com 1/18/27 Staff Development Day - Student Holiday http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50438 50438-seminoleisd@intand.com 2/8/27 Staff Development Day - Student Holiday http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50439 50439-seminoleisd@intand.com 2/12/27 End of Fourth Six Weeks http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50440 50440-seminoleisd@intand.com 2/15/27 Bad Weather Day http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50441 50441-seminoleisd@intand.com 2/16/27 Start of Fifth Six Weeks http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50442 50442-seminoleisd@intand.com 3/15/27 - 3/19/27 Spring Break http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50443 50443-seminoleisd@intand.com 3/26/27 Holiday - Good Friday http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50444 50444-seminoleisd@intand.com 3/28/27 Easter http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50413 50413-seminoleisd@intand.com 3/29/27 Bad Weather Day http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50445 50445-seminoleisd@intand.com 4/2/27 End of Fifth Six Weeks http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50446 50446-seminoleisd@intand.com 4/5/27 Start of Sixth Six Weeks http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50447 50447-seminoleisd@intand.com 4/23/27 Staff Development Day - Student Holiday http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50448 50448-seminoleisd@intand.com 5/21/27 Early Release http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50452 50452-seminoleisd@intand.com 5/21/27 End of Sixth Six Weeks http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50449 50449-seminoleisd@intand.com 5/21/27 Last Day of School http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50450 50450-seminoleisd@intand.com 5/31/27 Memorial Day http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50414 50414-seminoleisd@intand.com 7/4/27 Independence Day http://seminoleisd.tandem.co/index.php?type=key_date&action=details&id=50415 50415-seminoleisd@intand.com