This pupil/student was enrolled at birth in a National Survey of Health and Development. With the help of his parents and of health visitors, school teachers and nurses, a detailed account has been obtained of his health and development during the past 17 years. The Survey boys and girls come from all types of home, and are attending, or have attended all types of school and college, both local authority and independent: a great number are of course already in employment. Only 2% of those at school in England, Wales and Scotland have been lost, and the value of this enquiry depends on our continuing to obtain information for every possible Survey member: the fewer the losses the more valuable is the information received. We are particularly interested in the group that was still at school last autumn, and hope that you will be able to give us information about the above-named pupil's/student's examination record, absences, and leaving date if relevant.