The school was established by the authorities of the Socialist Republic of Croatia in 1954.

Gymnasium Županja carries the educational programs of general secondary school, science, and language direction.

The school is an important educational institution for the town of Županja, neighboring or nearby municipalities of Štitar, Bošnjaci, Gradište, Babina Greda and the Cvelferija region.

In 2020 the school received 40,000 Croatian kuna from the Marin Čilić Fund for the equipment for the chemistry lab.

organization from Zagreb in organization of cultural activities and holiday gifts for youth with fewer opportunities.