Teaching · For Teachers · Calendar

Count the days
before the board
votes on them.

Type the first and last day and every holiday, workday and break. The calculator counts instructional days and hours, checks them against the number you must meet, and shows how much room is left for snow days.

Count the daysWhat you get
$12one-time · every device you sign in on
Buy · $12

Included with Caveat Classroom and Whole-school licenses. Or get it in the For Teachers toolkit, $79 for 72 items.

The instructional days calculator

The worked example is a made-up 2026–27 draft with the usual federal holidays and breaks. Nothing you type leaves this browser.

Loading the calculator. If nothing appears, turn on JavaScript.

What you get

Teaching · For Teachers$12 · included with Classroom and Whole-school licenses

What you finish with
The number of instructional days, school weeks and hours in a calendar, the gap or margin against the requirement, school days by month and what each break removes. It prints as a summary and downloads as a spreadsheet.
Who it is for
Principals, district calendar committees, office managers and teachers mapping out a year.
Format
Browser calculator for a phone, tablet or computer, by touch or keyboard. Up to 60 non-school entries. Prints a summary; downloads a spreadsheet (.csv); export and import a file.
Access
$12 one-time, yours on every device you sign in on; the tool opens once you are signed in with it. Included with Caveat Classroom and Whole-school licenses. Also in the For Teachers toolkit ($79) and the Teaching Suite pass ($199), and 1 more bundle. Everything you type stays in this browser; nothing is sent to Caveat.
Where it lives
The For Teachers space in Caveat Teaching.
Support
Questions, a correction or a request: team@caveatacademic.com.

How to use it

  1. Name the draft and set the first and last day for students.
  2. Choose the school weekdays and, if you know them, the days required and minutes a day.
  3. Add each holiday, workday and break.
  4. Read the count, the margin and the month-by-month bars.
  5. Print the summary or download the spreadsheet to compare drafts.

Count the days

How the days are counted

Every school weekday in range, less the listed days.

The worked example: every weekday, less the days offWeekdays in range202Aug 19 to May 27, Mon–FriDays off− 238 holidays and breaksInstructional days1791 short of the 180 requiredThe worked example: every weekday, less the days offWeekdays in range202Aug 19 to May 27, Mon–FriDays off− 238 holidays and breaksInstructional days1791 short of the 180 required
The draft calendar has 202 weekdays between the first and last day; its holidays and breaks remove 23, leaving 179 instructional days.

The counting rule

A day counts when it falls between the first and last day for students, on one of the school weekdays, and is not on the list of non-school days. Ranges are expanded day by day and weekends inside them are ignored, so a two-week winter break removes ten days, not fourteen. A day listed twice is removed once. Hours are days times instructional minutes, divided by 60.

What it does not decide

States and districts define what counts as an instructional day, how many are required, whether hours can stand in for days, and how early-release or late-start days are treated. This page counts the calendar you type; your state education agency’s rules decide whether it complies.

Sources

  1. National Center for Education Statistics. State Education Practices, Table 5.14: number of instructional days and hours in the school year, by state (nces.ed.gov).
  2. Education Commission of the States. 50-State Comparison: Instructional Time Policies (ecs.org).
  3. 5 U.S.C. 6103: the legal public holidays of the United States, used for the dates in the worked example.
  4. U.S. Office of Personnel Management. Federal holidays calendar (opm.gov): 2026 and 2027 holiday dates.

The worked example is made up. This page counts days; it does not decide whether a calendar meets your state’s requirements. Your calendar stays in this browser. Support: team@caveatacademic.com.