It was established in 1973 by the United States Embassy to serve United States Government employees' dependents; however, it now has a much more diverse student body including children of the local and expatriate business and diplomatic communities.

Grades 3 - 12 (upper elementary, middle and high school) shared the Nagykovácsi Campus located just 13 kilometers from the center of Budapest.

Building B, which houses grades 6–12, was built in 2000, and is complete with 54 classrooms, library, cafeteria, double-sized gymnasium, 25-meter indoor swimming pool, 350-seat theatre, performing and visual arts facilities, and playfield (these facilities are also shared with the Lower school).

The AISB provided older laptops and iPads, and helped Ukrainian students join online classes streamed from their home institutions.

[2] ”We felt that if we had the space, we would use the expertise that was here, the Ukrainian teachers that had moved here…so that children could move back into their home language as quickly as possible,” says AISB Director Brett Penny in a documentary about the "School within a School" project.