The Mission Consolidated Independent School District (CISD) Board of Trustees has approved an adjustment to the school calendar for 2020-2021 due to the pandemic. The approval came during a regular board meeting on Wednesday, January 20, 2021. The revised calendar impacts two days on the calendar, February 19, 2021 and May 31, 2021. The school calendar had originally designated February 19, 2021 as a staff development day, it will now be a regular school day and will require student attendance. The revised calendar also designates May 31, 2021 as a staff development day for personnel.