BIGGEST EVER SCHOOL RANKING PLACES ASIAN COUNTRIES TOP 5 AND GHANA AT THE BOTTOM

The biggest ever global school ranking by the OECD has been published with Asian countries in top 5 and African countries at the bottom.
Singapore tops the list followed by Hong Kong while Ghana is at the bottom.
OECD's economic think tank says  the comparisons based on test scores in 76  countries shows a relationship between economic growth and education.
OECD's Education Director, Andreas Schleider says this is the first time there is a global scale of quality education. He says, 'the idea is to give rich and poor countries access to compare themselves against the world's education leaders to discover their relative strength and weaknesses and to see whatbthe longterm economic gains  from improved quality in schoolingcould be for them.
UK ranked 20th while USA ranked 28th