Gaztelueta promotes arts as a means of personal expression for students. Creativity is developed through curricular and extracurricular subjects; drawing, painting and arts have an important presence in the school.
Imagination, fantasy and the ability to express feelings or realities in different ways are fundamental in the learning and development of student's personalities.
Pepe Alzuet instilled in the first students a taste for painting by implementing excursions so that the students could draw landscapes.
Gaztelueta's artistic heritage includes the frescoes by Ramil del Chalet