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Oxford online CDI tool

The Oxford CDI is a list of words that are typical in children's vocabularies. The inventory is a comprehensive "catalogue" of words that are used by many different children across a wide age range, so do not worry if your child knows only a few of them at the moment.

Filling out the Oxford CDI


For words that your child understands place a mark in the first column, labelled "Understood
For words that your child also says place marks in both the first, labelled "Understood", and the second column, labelled "Spoken

For more information about the Oxford CDI or how to cite this tool click here 


EDIT: If the tool does not appear for you, please go to the top of your browser and select 'allow unsafe scripts' or equivalent. We hope to fix this issue shortly