A new study finds that a child's language skills (use of vocabulary and grammar) in kindergarten can predict his or her future proficiency in other subjects, and was found to be the most solid predictor of a child’s later success.

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A new study finds that a child's language skills (use of vocabulary and grammar) in kindergarten can predict his or her future proficiency in other subjects, and was found to be the most solid predictor of a child’s later success.