The 100th day of school is a different date in every school, because every school starts on its own day and closes on its own days. Teachers count it out on the classroom calendar every year. This page does the counting: your first day, your holidays, your winter break, and any day off you tap.
The count, step by step
- Day 1 is the first day of school.
- Every weekday counts, Saturdays and Sundays never.
- Days off do not count: the holidays you tick, the winter break, and any day you tap on the calendar.
- The 100th school day is the answer, and the calendar shows the number of every school day before it.
Two examples for 2026 to 2027
| First day | Days off | The 100th day |
|---|---|---|
| Monday, August 24, 2026 | Labor Day, Thanksgiving Thursday and Friday, December 21 to January 1, Martin Luther King Jr. Day | Thursday, January 28, 2027 |
| Tuesday, September 8, 2026 | the same | Thursday, February 11, 2027 |
For the day itself
Print the 100 chart for the wall, and for the day, a paper crown with 100 on it. Counting something else? The date calculator counts the days between any two dates.
Questions
When is the 100th day of school?
It depends on when your school started and how many days it closed. Counted from Monday, August 24, 2026, with Labor Day, Thanksgiving Thursday and Friday, a winter break from December 21 to January 1 and Martin Luther King Jr. Day off, it falls on Thursday, January 28, 2027. A school that started on Tuesday, September 8, with the same days off, reaches it on Thursday, February 11, 2027. Type your own first day and days off for yours.
How is the 100th day counted?
The first day of school is day 1. Every weekday after it counts, except the days the school is closed: holidays, the winter break, teacher workdays, snow days. The page counts them for you and shows each school day's number on the calendar.
Which holidays does the page know?
The ones many US districts close for, with their dates for the school year: Labor Day, Indigenous Peoples' Day or Columbus Day, Veterans Day, Thanksgiving Thursday and Friday (or the whole week), Martin Luther King Jr. Day and Presidents' Day. Tick the ones your school takes off; anything else, tap on the calendar.
What is the 100 chart?
A wall chart for the classroom: the numbers 1 to 100 in ten rows, each with the date of its school day under it, and the 100th in gold. Mark one number every morning and the class sees the 100th day coming.
Is anything uploaded?
No. The count and the chart are made in your browser. Closing the tab erases them.