| SCHOOL CALENDAR 2020 / 2021 |
| Start of the school year – WELCOME DAY |
September 17 |
| Start of the 1st semester classes |
September 21 |
| School holidays // Christmas |
December 21 to January 2 |
| End of the 1st semester classes |
January 23 |
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| Inter-semester Break // Assessment and Tutorial Guidance |
January 25 to January 29 |
| Deadline to post the grades // 1st semester |
Until January 29 |
| Exam Registration |
January 29 until 3 days before the exam day |
| EXAMS, 1st semester |
February 2 to February 20 |
| School holidays // Carnival |
February 15 to February 16 |
| End of the 1st semester |
February 20 |
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| Start of the 2nd semester classes |
February 22 |
| School holidays // Easter |
March 29 to April 5 |
| ISEC Lisboa Day |
May 16 |
| End of the 2nd semester classes |
June 19 |
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| Inter-semester Break // Assessment and Tutorial Guidance |
June 21 to June 25 |
| Deadline to post the grades // 2nd semester |
Until June 25 |
| Exam Registration |
June 25 until 3 days before the exam day |
| EXAMS, 2nd semester |
June 29 to July 17 |
| End of the 2nd semester |
July 17 |
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| Exams Special Period, Student Worker and Final-Year Students |
July 19 to July 31 and September 1 to September 11 |
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| Re-enrolment of students who do not take exams in the 2nd semester nor special period |
July 1 to July 16 |
| Re-enrolment of students who took exams in the 1st call of the 2nd semester |
Until July 30 |
| Re-enrolment of students who took exams in the Special Period for Student Worker |
Until September 17 |
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| Exam Registration for Final-Year Students – Special Period |
October 1 to October 29 |
| Exams for Final-Year Students – Special Period |
November 15 to December 15 |
| END OF SCHOOL YEAR |
December 30 |