This child was enrolled at birth in a national survey of the health, growth and development of children. With the help of his parents and of health visitors, school nurses and teachers, a detailed account has been obtained of his health and development during the past ten years. Particularly valuable information has been obtained from the special records of school absences kept during the primary school period, and the Joint Committee now feel that these should be supplemented by further information about the school background and the child's behaviour in school. They are therefore asking teachers to answer the following questions from their own knowledge of the child. The value of this inquiry depends on information being obtained for every possible child. During the past ten years only 6 percent. of the original sample have been lost. The Joint Committee are therefore most anxious that this form should be completed.