In 1870, following a proposal by the poet Spyridon Vassiliadis, the Society decided to found the School for Destitute Children, in order to contribute to the solution of a major social problem of that time. Within a decade, the School opened several annexes in various parts of Greece, such as Kalamata, Syros, Zante, Patras, Andros, Pyrgos, Lefkada, Argostoli, etc. In 1883, the pupils of the School amounted to 600, which was considerable, given the small number of Athens’ inhabitants in the end of the nineteenth century.

In the beginning of the twentieth century, in 1901, 2149 pupils were matriculated. In 1925, the School numbered 1316 pupils, which was still important, if one takes into account the fact that the State had already provided for the creation of public establishments of that kind.

An important moment for the history of the School was the foundation of its actual building on April 6th, 1930, by the President of the Republic Alexandros Zaïmis, in the presence of Prime Minister Eleutherios Venizelos and Minister of Education Georgios Papandreou. The latter, among other things, said the following honorable words about the Schools and its founder, Spyridon Vassiliadis: “Gentlemen, you were right in associating today the laying of the foundation stone for the new educational establishment of ‘Parnassos’ with the splendor of the celebration of the Centenary. Indeed, ‘Parnassos’ constitutes also a glory of the century of freedom. Emanating from the inspiration of a poet, it imposed itself in the minds of everyone and managed for many decades to pay a valuable and uninterrupted double service, both spiritual and moral, to Greek society. ‘In the beginning there was the Verb’; ‘In the beginning there was the act’. Which one is true? ‘Parnassos’ never faced that dilemma.

From its tribune, it always cultivated the verb, while the long-lasting and successful functioning of its School has been a virtuous and fruitful act. In this way, it achieved a happy synthesis. In fact, modern life, if guided only by the verb, would finally become void and infertile, which can be avoided only if it leads to virtuous act - the only thing that can fully and deeply satisfy the transient human being. Gentlemen, today we must honor with gratitude above all the memory of the founder poet, from whose soul sprang the idea of this establishment. We should also commemorate with gratefulness all its noble collaborators during these sixty years. And you, Gentlemen, who actually have the responsibility of heading ‘Parnassos’, thus continuing with devotion its noble traditions, and who inaugurate today a new landmark of its social history, be sure that the gratitude of your young boarders is accompanied by the recognition of the whole Greek society”.

The building at the corner of the streets Themistokleous and Kantakouzinou has been inaugurated on March 22nd, 1932, and the School was transferred there from the central seat of the Society. However, half a century later, during the eighties, the new official measures favorable to the destitute and working pupils, as well as the creation of evening schools in the capital, incited the members of the Society to transform the School into Sections of Foreign Languages and Computer Sciences. There remained 3 sections of Grammar School, actually attended by 160 foreign and repatriated Greek pupils who learn Greek language and culture.