# data[].attributes.headline
Different certification tests and the CEFR certification level

# data[].attributes.subject
Different certification tests and the CEFR certification level

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Some References:

https://ielts.org/take-a-test/preparation-resources https://www.cambridge.org/vg/cambridgeenglish/catalog/cambridge-english-exams-ielts/ielts/official-cambridge-guide-ielts/

# data[].attributes.body
References:

https://www.cambridge.org/vg/cambridgeenglish/catalog/cambridge-english-exams-ielts/ielts/official-cambridge-guide-ielts/

https://takeielts.britishcouncil.org/blog/english-proficiency-test

# data[].attributes.body
Some references:

https://ielts.org/take-a-test/preparation-resources

https://www.cambridge.org/vg/cambridgeenglish/catalog/cambridge-english-exams-ielts/ielts/official-cambridge-guide-ielts/

# data[].attributes.body
Some references: https://www.cambridge.org/vg/cambridgeenglish/catalog/cambridge-english-exams-ielts/ielts/official-cambridge-guide-ielts/

https://takeielts.britishcouncil.org/blog/english-proficiency-test

https://ielts.org/take-a-test/preparation-resources