Question

how can you measures the education litrecy

Answer 1

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According to UNESCO,

Literacy is a fundamental human right and the foundation for lifelong learning. It is fully essential to social and human development in its ability to transform lives. For individuals, families, and societies alike, it is an instrument of empowerment to improve one’s health, one’s income, and one’s relationship with the world.
hope it helps you

Answer 2

The interactive chart below shows global literacy rates among adults, over the period 1800-2014. This is a powerful graph: it tells us that over the last two centuries the share of illiterate adults has gone down from 88% to less than 15%.
This global perspective on education leads to a natural question: What does it actually mean to be 'literate' in this statistical sense?
This is not a simple question. Literacy rates are only a proxy for what we actually care about, namely literacy skills. The distinction matters because literacy skills are complex and span over a range of proficiency shades, while literacy rates assume a sharp, binary distinction between those who are and aren’t ‘literate’.