The Thessaloniki high school was established by the Bulgarian exarchate. Here you can see diplomas, textbooks, and notes from Bulgarian students of the school. Although it was established in Thessaloniki, after a fire in the beginning of the 20th century, after the First World War the school was moved to its new and current home in Blagoevgrad and renamed to the High school of natural sciences and mathematics.
(new) In fact, the Thessaloniki high school is where IMORO was created on the 23rd of October 1893. Most of the students and teachers in the school were part of the movement and namely here the decision for the Ilinden–Preobrazhenie Uprising in 1903 was taken.
