OIS opened in 2010 and offers an international education within the Lisbon area. In the intervening decade the school established itself as the leader in student skills development and has quickly become the institution of choice for technologically minded, creative and socially aware families that prioritise finding the right balance between academic excellence and the interaction with nature. OIS students are taught to be in control of their own learning. They develop the essential skills of time management, project leadership, collaboration and debate.