The International Schools' Assessment (ISA) is designed for students in Grades 3–10 in international schools and schools with an international focus. The program offers assessments for Mathematical Literacy, Scientific Literacy, Reading and Writing. 

Trusted by hundreds of schools around the world

The ISA has been supporting international schools and internationally-focused schools since 2002. Every year approximately 90, 000 students from more than 70 countries take part in the ISA.

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Make a difference in your school with the ISA.
Talk to the ISA team to find out how.

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Informing school improvement with in-depth data

The ISA enables schools to:

  • monitor an individual's or a cohort's progress over time

  • measure a student's achievement to reflect on and address their strengths and weaknesses

  • compare school performance and progress to an international cohort and schools in the same region

  • compare results against schools with similar proportions of students with English-speaking backgrounds

  • evaluate instructional programs against objective evidence of student performance, to identify gaps and measure growth.

Based on internationally endorsed frameworks

Designed by the Australian Council for Educational Research (ACER), the ISA is based on the assessment frameworks of the OECD’s Programme for International Student Assessment (PISA) and has been developed in consultation with international schools. ACER has been instrumental in the implementation, management and reporting of large-scale international surveys and brings their experience in these types of assessments to the ISA program.

Like PISA, the ISA assesses complex higher-order thinking skills because it includes open-ended questions in Mathematical Literacy, Reading and Scientific Literacy, which require students to construct responses, for example, to explain their reasoning, to find evidence or to justify their opinion.

Note that the ISA is not part of PISA and is not endorsed by the OECD.

ISA Introduction pack

Contains all ISA guides and documents, including our list of participating schools.



The ISA team regularly hosts introductory webinars for prospective schools who would like to learn more about the ISA. Please select the session that best suits your time zone or register for an on-demand session.

Introduction to the ISA

This webinar offers schools an introduction to the key aspects of the ISA program. It provides practical guidance on the data that the ISA provides, and the insights that can be gathered, from identifying gaps in programming, recognising areas of growth and monitoring student progress over time.

Session available on demand.

Which international assessment is right for you?

This webinar offers schools a guide to the range of international school assessments that ACER offers, including the International Schools' Assessment (ISA), the International Benchmark Test (IBT) and Progressive Achievement for International Schools (PAIS). 

We compare the purpose and benefits of each assessment and help you decide which will best fit your administration and reporting needs. 

Session available on demand.