When Is the 100th Day of School?
Enter your first day of school and any days off. We count 100 school days (Monday to Friday) and tell you the date.
Holidays and breaks
Add each break (e.g. Thanksgiving, winter break). Weekends are skipped automatically.
Pick your first day of school
Your school calendar is the final word — snow days and closures can move the date.
Ready to celebrate?
Browse our 100th day of school ideas: shirts, costumes, projects and activities.
Questions
When is the 100th day of school usually?
For US schools that start in mid-to-late August, the 100th day usually falls between late January and mid-February. Schools that start after Labor Day often reach it in February.
Does the 100th day count weekends?
No — only days when school is in session count. That is why holidays, teacher work days and snow days push the date later.
Is today the 100th day of school?
Enter your first day and days off above; the calculator also tells you which school day today is.