It was founded in 1929 and was owned by Lago Oil and Transport Co. Ltd. From 1986 on, the school was governed by the ISA community and parent body.
It was owned and operated by Lago Oil and Transport Co. Ltd. to provide for the schooling of the expatriates' children.
With the closing of Lago in 1985, the parents of the remaining students formed the International School of Aruba (ISA), a non-profit Foundation, to continue English language education on the island.
In March 2004, the Board of Directors passed the governance and ownership of ISA to International Schools Services (ISS), a not-for-profit organization of Princeton, New Jersey.
ISS promised to fund a new school building for ISA as part of the transfer agreement, and financed the construction of the new campus.