In 1993, the school moved up the street to a house at Zelengaj 45 1B. As the school continued to grow, it expanded into the house next door at Zelengaj 45 1A. In 1998, the school changed its name to the American International School of Zagreb to reflect its growing international population. AISZ remained at the Zelengaj addresses and served 110 students from Kindergarten to Grade 8.
In 2000, the American International School of Zagreb moved to the southeastern wing of the Inter-Diocesan Seminary at Voćarska 106. In 2001 a commitment was made to expand to a full high school program and to add a Junior Kindergarten.
In June 2004, AISZ’s senior class graduated from the American International School of Zagreb.
After a number of false starts over the years, persistence paid off and on 12, September 2017 AISZ commenced building our new campus situated beside Bundek Park. Just thirteen months later, we closed the doors on the old Voćarska Campus, which had been our home for 18 years and moved. We closed doors on Voćarska on a Friday and opened at Bundek on Monday.