Teenagers will be allowed to switch to the qualifications, which were scrapped in the late 80s following the introduction of GCSEs, under Conservative plans to give schools greater freedom to choose between courses.
It comes as figures show 654,000 candidates took O-levels this year in countries such as Hong Kong, Singapore, Malaysia and Pakistan. It represents an increase of 22,000 in the last four years.
The tests are still offered by two British exam boards – Cambridge International Examinations and Edexcel – even though they are currently banned in English state schools.
Source: here