*subject to change
| GENERAL CALENDAR DATES | FALL 2026 | SPRING 2026 | SUMMER I 2026 | SUMMER II 2026 |
|---|---|---|---|---|
| Classes begin | Aug. 25 | Jan. 11 | May 31 | July 3 |
| Open registration begins for future term(s) | Nov. 22 | Apr. 26 | ||
| Last day to declare pass/fail intentions | Nov. 22 | Apr. 26 | June 26 | July 31 |
| No exams except makeup or scheduled lab exams | Nov. 30-Dec. 7 | Apr. 26-May 3 | ||
| Last day of classes | Dec. 6 | May 2 | June 29 | Aug. 2 |
| Individual study day | Dec. 7 | May 3 | ||
| Final examinations | Dec. 8-13 | May 4-9 | June 30-July 1 | Aug. 3-4 |
| Semester/Term ends | Dec. 13 | May 9 | July 1 | Aug. 4 |
| PAYMENTS AND REFUNDS | FALL 2026 | SPRING 2026 | SUMMER I 2026 | SUMMER II 2026 |
| Invoices sent | Aug. 31 | Jan. 18 | June 2 | July 6 |
| Full tuition payment due | Sept. 6 | Jan. 24 | June 8 | July 12 |
| Late payment fees apply | Sept. 7 | Jan. 25 | June 9 | July 13 |
| Last day to drop a course and have charges removed | Sept. 12 | Jan. 27 | June 5 | July 7 |
| ADD/DROP (CHANGE SCHEDULE) AND WITHDRAW (DROP ALL COURSES) | FALL 2026 | SPRING 2026 | SUMMER I 2026 | SUMMER II 2026 |
| Last day to add a course through MyTech | Aug. 30 | Jan. 17 | May 31 | July 5 |
| Last day to drop a course without academic penalty | Sept. 12 | Jan. 27 | June 2 | July 7 |
| Last day to drop a course with academic penalty | Nov. 21 | Apr. 18 | June 26 | July 31 |
| Last day to transfer between colleges for the current term | Sept. 12 | Jan. 27 | June 5 | July 7 |
| Last day to withdraw from the university | Nov. 21 | Apr. 18 | June 26 | July 31 |
| Last day for degree candidates to remove grades of I and PR | Dec. 9 | Apr. 28 | June 26 | July 31 |
| HOLIDAYS AND VACATION DAYS | FALL 2026 | SPRING 2026 | SUMMER I 2026 | SUMMER II 2026 |
| Costa Rica Independence Day (observed) | Sept. 19 | |||
| Thanksgiving Vacation | Nov. 24-25 | |||
| Abolition of the Army (observed) | Dec. 5 | |||
| Winter break | Dec. 14-Jan. 10 | |||
| Holy Week TTU-CR (online courses continue) | Apr. 3-7 | |||
| Juan Santamaria (observed) | Apr. 10 | |||
| International Labor Day | May 1 | |||
| Annexation of Guanacaste (observed) | July 24* | |||
| FACULTY-RELATED INFORMATION | FALL 2026 | SPRING 2026 | SUMMER I 2026 | SUMMER II 2026 |
| Faculty on duty | Aug. 22 | Jan. 9 | May 30 | July 3 |
| Midterm grading opens | Oct. 13 | Mar. 1 | ||
| Mid-semester grades due via Raiderlink | Oct. 27 | Mar. 22 | ||
| Raiderlink available for grading | Dec. 5 | May. 1 | June 27 | Aug. 1 |
| Grades due for graduating students via Raiderlink (noon) | Dec. 14 | May 10 | ||
| Final grades due via Raiderlink | Dec. 19 | May 15 | July 3 | Aug. 7 |
