The OECD Programme for International Student Assessment (PISA) is an international comparative survey of 15-year-olds’ knowledge and skills in reading, mathematical and scientific literacy. PISA seeks to measure how well young adults have acquired the knowledge and skills that are required to function as successful members of society. As part of the PISA 2009 survey, students completed an assessment on reading literacy, mathematical literacy and scientific literacy, as well as an extensive background questionnaire. School principals also completed a survey describing the context of education at their school, including the level of resources in the school and qualifications of staff. Sixty-four countries or economies originally participated in PISA 2009: all 34 OECD countries plus 31 partner countries and economies. These 65 participants administered the PISA 2009 tests in 2009. Ten additional partner participants who were unable to participate within the PISA 2009 project timeframe participated in the PISA 2009 study on a reduced and delayed timeline. This is known as the PISA 2009+ project. The ten PISA 2009+ participants administered the same assessments as their PISA 2009 counterparts, the only difference being that the assessments were administered in 2010. The PISA 2009+ countries or economies were adjudicated against the same technical and quality standards as their PISA 2009 counterparts. The ten PISA 2009+ participants were: Costa Rica, Georgia, Himachal Pradesh-India, Malaysia, Malta, Mauritius, Miranda-Venezuela, Moldova, Tamil Nadu-India, and The United Arab Emirates.
Walker, Maurice (2011). 'PISA 2009 Plus Results : Performance of 15-year-olds in reading, mathematics and science for 10 additional participants'. Melbourne: ACER Press