It was founded by American Methodist Ira Haynes La Fetra and his wife as a girls boarding school.

From Pre-Kinder to 8th grade, most classes are taught in English, with the exception of Spanish, Religion, Physical Education and Sports, and the Arts.

In posterior years, most classes are taught in Spanish with exceptions like Business management and Environmental systems and societies.

Although this causes a slight misalignment with the traditional Chilean academic year (which start in March and ends in December, instead of starting in September and ending in June), the change was done to avoid potential conflicts with the Chilean university admission exams (PAES), which are sat in early December.

[2] There are still monuments in honour of important school figures near the 'Los Leones' campus (which is now owned by San Sebastián University).