This is the second report on height and weight of U.S. children, six to 11 years old, from Cycle II of the Health Examination Survey. The first report analyzed and discussed data on height and weight by age, sex, race, and geographic region. This second report carries the analysis and discussion of height and weight data further by considering some measurable socioeconomic variables. Cycle II of the Health Examination Survey, conducted from July 1963 to December 1965, involved selection and examination of a probability sample of noninstitutionalized children in the U.S. aged six to eleven years. This program succeeded in examining 96 percent of 7,417 children selected for the sample. The examination had two focuses: on factors related to healthy growth and development as determined by a physician, a nurse, a dentist, and a psychologist, and on a variety of somatic and physiologic measurements performed by specially trained technicians. Several separate interviews in the weeks preceding the examination performed a variety of functions. They identified the child eligible for the sample; they obtained demographic information and some family health and selected family socioeconomic information; and they obtained the child's developmental and early medical history and current information about his health status. (Author/JM)