- Freshmen Orientation - Aug 12
- Classes Begin - Aug 13
- Labor Day - Sept 2
- Parent/Teacher Conferences - Sept 24 & Sept 26; Feb 18 & Feb 20
- Open House - August 26, 5 PM - 7 PM
- Teacher WK/PD Day (No School) - Aug 6-9, Aug 12, Nov 4, Jan 6, Feb 24, & Mar 24, Apr 18
- Fall Break - Oct 14-18
- General Election Day (No School) - Nov 5
- Thanksgiving Break - Nov 25-29
- Classen SAS@NE 25-26 Recruitment Begins - TBD
- Winter Break - Dec 23-Jan 6
- Martin Luther King Jr Day - Jan 20
- Classen Application 2024-25 Due Date - TBD
- Spring Break - March 17-21
- International Baccalaureate Exams - April 22 -May 16
- Advanced Placement Exams - May 5-May 16
- Last Day of School - May 22