The English-using school was founded in 1995, and became an authorized IB school in 2003. The first IB examinations took place in 2005. The authorisation committees of the IBO gave a high grade for the academic standard, the teachers, the campus facilities and the atmosphere of the school.Founded in 1995, Zlatrski International School of Sofia offers a program of studies for boys and girls aged 14–19. 300 students from grades 8 to 12 attend the school. The 2006/2007 school year marks the graduation of the school's eighth graduating class.
