Two schools under one roof

Travnik's gymnasium is a classic example of the "Two schools under one roof" system. The right side of the building hosts the Croatian-curriculum high school (Catholic School Centre Petar Barbaric) and was renovated with funds from the Republic of Croatia. The left side of the building hosts the Bosnian-curriculum high school and is dilapidated. Until July 2019, the courtyard was separated in two by a fence.

Two schools under one roof is a term for schools in Bosnia and Herzegovina based on the ethnic segregation of children on the pretext of speaking different languages. Children from two ethnic groups, Bosniaks and Croats, attend classes in the same building, but physically separated from each other and taught separate curricula. Children from one ethnic group enter the school through one door, while children from other ethnic group through another. In the Federation of Bosnia and Herzegovina, 57 schools operated in this way in the year 2010. Students have been protesting against the segregation for years, warning that it increases inter-ethnic hatred. By 2018, 56 such schools remained. This phenomenon of ethnic separation is attributed to the Croat–Bosniak War (1992–1994) and the creation of Herzeg-Bosnia on the territory of Bosnia and Herzegovina. Croatia continues to finance the system of separate Croatian-curriculum public schools in BiH.