Directed to teachers and other school personnel, the text presents screening procedures to aid in the early identification of the emotionally handicapped. The nature of preventive mental health, emotional handicap, and problems in early identification are considered; also considered are the direction and trends of past research. A study in early identification is then described in terms of its objectives and methods, its results and their implications for screening, and additional results and followup studies. The investigator's reactions to the study are related, ways in which the teachers can use the results in screening are detailed, and some positive and preventive outcomes are explained. A reference list cites 154 items; an appendix, which constitutes more than half of the volume, provides materials which are either excerpts from a manual and a technical report for school administrators and teachers or parts of an inschool screening kit. (JD)