This volume contains the technical paper prepared by the Department of Health, Education and Welfare (DHEW) to give additional data and a more detailed analysis of materials used to study the impact of the Federal Interagency Day Care Requirements (FIDCR) on children in day care. This impact study was part of a larger project to investigate two questions: Is the Federal regulation of day care financed under Title XX appropriate? Are the specific requirements for day care now imposed under Title XX appropriate? This volume's seven chapters concern grouping of children, caregiver qualifications, educational services, environmental standards, nutrition, health, and parent involvement. Also provided are 40 pages of bibliographic references and a 17-page glossary of terms. Appendices include an executive summary of the Report on the Appropriateness of the FIDCR; Report of Findings and Recommendations; the text of the FIDCR; and a legislative history of the FIDCR. (Author/DB)