* The specific state: Each state has its own list of official holidays.
* The specific school district: Even within a state, individual school districts might have different policies regarding holiday closures. Some might observe more holidays than others, or might have different schedules due to local events or needs.
* The type of school: Private schools might have different holiday schedules than public schools.
To know for sure if a school is closed for a particular state holiday, you should check the school's calendar or contact the school district directly.