This field procedures manual for community interviewers and site coordinators, one of a series of documents on the evaluation of the National Home Start program (NHS), describes specific testing procedures for collecting family data. A federally funded demonstration program, NHS is aimed at providing home-based services (such as health, education, nutrition, psychological/social services) to families with preschool children. The manual includes (1) preparation of materials and staff procedures before evaluation begins; (2) ongoing scheduling procedures; (3) procedures to be followed for each evaluation visit, including preparation of materials and testing instructions; (4) test monitoring procedures; (5) field logistics; and (6) exhibits of parent letters, assignment sheets, master schedules, an inventory, and a log sheet. The appendices include preliminary evaluation results, general testing and interviewing practices, examples of problem situations and how to handle them, and monitoring and performance evaluation forms. (SE)