New Year's Day (January 1).

Birthday of Martin Luther King, Jr. (Third Monday in January).

Washington's Birthday (Third Monday in February).

Memorial Day (Last Monday in May).

Juneteenth National Independence Day (June 19).

Independence Day (July 4).

Labor Day (First Monday in September).

Columbus Day (Second Monday in October).

Veterans Day (November 11).

Thanksgiving Day (Fourth Thursday in November).

Christmas Day (December 25).

There are no classes in the following cases:

There are no weekend classes when a federal holiday is on a Monday (with the exception of MLK Day, Columbus Day and President's Day).

The day before and after Thanksgiving and Christmas.

When NISD is closed/students are out of school (e.g. Winter break, Spring break, student holidays, weather closures, etc.)​