We recommend that all schools taking part in the Nuffield Early language intervention (NELI) programme assess all children in their reception classes with LanguageScreen before starting the programme and again after the programme has been completed. Reassessing all children in the class after the NELI programme has been completed by the children who received it gives teachers a way of monitoring the extent to which the NELI programme has been successful in "closing the language gap" between the children who received the NELI programme and their peers with better language skills.