Oeiras International School (OIS) is an IB World School in Oeiras, a suburb of Lisbon, Portugal.
Overview.
Established in 2010, the English-speaking school offers the International Baccalaureate program throughout all year groups. The school caters for students in Year 6 through to Year 13, having previously hosted only students in Years 7 through 12 during its inaugural academic year (2010/11).
The school campus is based on the premises of a 17th-century palace, the "Quinta de Nossa Senhora da Conceição" in Barcarena, Oeiras. The 5 hectare campus was newly refurbished in 2011. During its inaugural year (2010/2011), the school opened at temporary premises, located at "Fundição de Oeiras", but has since been located at its present campus.
OIS has ambitious plans to become an tensor Eco-School and intends to promote Environmental Awareness and Social Responsibility with the provision of scholarships and community service.
Motto.
The school motto is Sapere Aude (Dare to Learn).
Location.
Quinta de Nossa Senhora da Conceição,
à Rua Antero de Quental,
Barcarena,
2780-001 Oeiras,
Portugal 
References.
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