This handbook describes the home visiting program of the Jefferson County, Colorado public schools, in which teacher assistants, under supervision of the head teacher, visit parents of the children they are responsible for in the preschool center. Section I is an overview of the goals and purpose of the program. Section II describes the program in detail, focusing on the three kinds of visits made: (1) the first visit, during which a developmental screening test is administered; (2) ongoing home visits for families identified as most likely to benefit from continued contact; and (3) the final visit at the end of the school year, reviewing progress made by the child during the year. Section III discusses the attitudes and techniques needed for successful home visiting. (Author/SB)