What is O level and N level?

Related questions

1. Which one is higher diploma or Bachelor?
2. What is O'Level and A Level in Singapore?
3. What is a equivalent qualification?
4. What is a level 9 qualification?
5. What is O level l1r5?
6. What is an n4 qualification equivalent to?
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Tags

1. #leading
2. #normal
3. #followed
4. #fifth
5. #level
6. #secondary
7. #possibility
8. #course