The index is based on a number of global measures of educational standards such as the Organisation for Economic Cooperation and Development (OECD) Pisa tests.
In December the OECD survey revealed students in Asian countries – Shanghai, Singapore, Hong Kong, Taiwan and South Korea – performed the best in math, reading and science.
The report also stressed that life-long learning is needed to preserve the skills developed in education as they decline with age.
"From around 25 years of age, skill levels tend to decline, even when accounting for the quality of initial education" the report said.
Jobs involving a lot numeracy, reading and opting for adult education can slow this. Nonetheless, according to the report, this requires a pre-existing ability and those more likely to undertake adult education tend to already be highly educated.
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