Monday through Friday, 8 a.m. to 4:30 p.m. Central Time.
The school is closed for two weeks during the winter holiday, starting the week before and including the week of New Year's Day.
Other U.S. holidays we observe include:
- President's Day - Third Monday in February
- Memorial Day - Last Monday in May
- Independence Day - July 4th
- Labor Day - First Monday in September
- Thanksgiving and the Friday following - Fourth Thursday in November