School Calendar

The 2022-2023 Colstrip Public School Calendar was approved by the Colstrip Board of Trustees at its Regular April 2022 Board Meeting on April 25, 2022. 

The Calendar length is 169 student contact days. School begins on August 24 and ends on May 25. It has (8) Winter Break Days; (2) Spring Break Days. It has (143) Full Days; (25) Part Days; and (1) Half There are (184) Professional/Staff Days and (7) Pupil Instructional Related Days and (8) Professional Development Work Days or "PDW" Days for teacher development, work and group planning. While there are no make-up days scheduled in this calendar, it provides 1/2 of a day for possible school closure (not including one day provided by the Office of Public Instruction).


Staff Start Date: August 19, 22, 23 PIR

First Day for Students:  Wednesday, August 24

Winter/Christmas Break: 8 days plus weekends

Spring/Easter Break: 2 Days plus weekends

Last day for students: Thursday, May 25 (Half day)

Teacher Check-out: Friday, May 26

No Make Up Day Scheduled

Make Up Day Flexibility: ½  day (plus one day from State)


Total Full Days 143

Total Part Days 25

Total Half Days 1


Total School Days 169

PIR Days                   7

PDW Days                 8


Total Staff Days   184


Quarter One = 42 Days

Quarter Two = 41 Days

Quarter Three = 45 Days

Quarter Four = 41 Days


Full Day: (WHITE COLORED DAYS) This is a regular day of school.Typical days are Monday, Tuesday, Wednesday and Thursday during the following times:

Elementary K-3: 8:15 AM - 3:25 PM

Elementary 4-5: 8:15 AM - 3:30 PM

Middle School: 8:10 AM - 3:45 PM

High School: 8:05 AM - 3:33 PM


Partial Days: (GREEN ) School is dismissed early. These days are scheduled on Fridays. Partial day times:

Elementary K-3: 8:15 AM - 2:25 PM

Elementary 4-5: 8:15 AM - 2:30 PM

Middle School: 8:10 AM - 2:45 PM

High School: 8:05 AM - 2:35 PM


Half Days: (PURPLE COLORED DAYS) Half-days often occur right before holiday breaks. Half-day times:

Elementary K-3: 8:15 AM - 12:10 PM

Elementary 4-5: 8:15 AM - 12:15 PM

Middle School: 8:10 AM - 12:32 PM

High School: 8:05 AM - 12:20 PM


School Days: Days students will be in attendance at school.

Staff Days: Days scheduled for the professional staff.

 PIR Days: (ORANGE COLORED DAYS) Pupil Instruction Related (PIR) or professional development/training days. No school is scheduled for students.

PDW Days: (LIGHT BLUE COLORED DAYS) Professional Development Work Days. These are days when staff will have professional development or a scheduled work day. No school is scheduled for students.  

Vacation or Holidays: (YELLOW COLORED DAYS) Days recognized as holidays or breaks. There is NO SCHOOL on these days.