Important Dates: High School Year 2025-2026
ECP Important Dates 2025-2026 (pdf)
FALL SEMESTER 2025 |
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Session |
Code |
Approximate Start Date |
Approximate End Date |
Registration Add or Drop Date |
Withdraw Deadline |
Grading Open |
Grading Closed 5:00 PM |
ISU On-Campus |
1 |
08/25/2025 |
12/19/2025 |
09/08/2025 |
10/31/2025 |
12/08/2025 |
12/22/2025 |
Fall Semester |
HF |
08/13/2025 |
01/16/2026 |
10/10/2025 |
10/24/2025 |
12/12/2025 |
01/20/2026 |
Year-Long |
HY |
08/13/2025 |
06/05/2026 |
10/10/2025 |
01/16/2026 |
05/15/2026 |
06/05/2026 |
1st Trimester |
H1 |
08/13/2025 |
11/26/2025 |
10/10/2025 |
10/24/2025 |
11/07/2025 |
12/09/2025 |
1st and 2nd Trimester |
H12 |
08/13/2025 |
03/06/2026 |
10/10/2025 |
10/24/2025 |
02/20/2026 |
03/10/2026 |
2nd Trimester |
H2 |
11/17/2025 |
03/06/2026 |
01/09/2026 |
01/16/2026 |
02/20/2026 |
03/10/2026 |
2nd and 3rd Trimester |
H23 |
11/17/2025 |
06/05/2026 |
01/09/2026 |
01/16/2026 |
05/15/2026 |
06/05/2026 |
Block 1 |
B1 |
08/13/2025 |
10/03/2025 |
09/12/2025 |
09/19/2025 |
09/26/2025 |
10/07/2025 |
Block 2 |
B2 |
10/06/2025 |
11/19/2025 |
10/24/2025 |
10/31/2025 |
11/07/2025 |
12/09/2025 |
Block 3 |
B3 |
11/17/2025 |
01/23/2025 |
12/12/2025 |
12/19/2025 |
01/16/2026 |
01/27/2026 |
SPRING SEMESTER 2026 |
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Session |
Code |
Approximate Start Date |
Approximate End Date |
Registration Add or Drop Date |
Withdraw Deadline |
Grading Open |
Grading Closed 5:00 PM |
ISU On-Campus |
1 |
01/12/2026 |
05/08/2026 |
01/26/2026 |
03/20/2026 |
04/27/2026 |
05/12/2026 |
Spring Semester |
HS |
01/19/2026 |
06/05/2026 |
02/13/2026 |
03/13/2026 |
05/15/2026 |
06/05/2026 |
3rd Trimester |
H3 |
03/02/2026 |
06/05/2026 |
03/20/2026 |
04/10/2026 |
05/15/2026 |
06/05/2026 |
Block 4 |
B4 |
01/26/2026 |
03/06/2026 |
02/13/2026 |
02/20/2026 |
02/20/2026 |
03/10/2026 |
Block 5 |
B5 |
03/09/2026 |
04/24/2026 |
03/20/2026 |
04/03/2026 |
04/17/2026 |
04/28/2026 |
Block 6 |
B6 |
04/27/2026 |
06/05/2026 |
05/08/2026 |
05/15/2026 |
05/15/2026 |
06/05/2026 |
SUMMER SEMESTER 2025 |
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Session |
Code |
Approximate Start Date |
Approximate End Date |
Registration Add or Drop Date |
Withdraw Deadline |
Grading Open |
Grading Closed 5:00 PM |
ISU On-Campus |
Visit www.isu.edu/registrar/calendars for registration, drop, and withdraw deadlines for on-campus summer courses. |
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Summer |
HU |
06/01/2026 |
08/21/2026 |
06/26/2026 |
07/10/2026 |
07/24/2026 |
08/25/2026 |
Please Note: Students who withdraw from a course after the drop date are still financially obligated for payment of the course