[1] Alongside Serbian, the school implement its curriculum in French language.

[4] In 1964, the school was renamed Gymnasium "Predrag Kostić", honoring a local figure.

[4] Educational reforms in 1977 introduced specialized vocational courses alongside traditional curricula.

[4] The main building of Pirot Gymnasium, constructed in 1907, was designed by Serbian architect Milorad Ruvidić.

[5] The building features a monumental entrance hall with massive columns, arches, and balustrades.