The most important celebration of this stage is the Graduation in 4th ESO. The students celebrate the achievement of the title of Secondary Education and the beginning of the next stage in International School Peniscola Bachillerato.
Furthermore, they participate in different celebrations that are carried out in the center such as:
- Literature Week: it is dedicated to the literary and artistic expression, where the students of Primary ISP, Secondary ISP and Bachillerato ISP show their projects about literature and Arts & Crafts.
- Science Week: it is dedicated to investigation and experimentation, where the students of Secondary ISP show different scientific experiences or projects made throughout the academic course.
- End-of-school trip for the students of 4th ESO. International Secondary School Peniscola organises different cultural trips with its students, being this one the most important because of its duration and displacement. There they will be able to enjoy one of the most remarkable European capital cities due to its cultural diversity and wealth.