This practicum addressed the need to provide training and experiences for school psychologists serving preschool children and their families. The practicum involved preparing and presenting inservice training to special education cooperative preschool assessment teams. Inservice training sessions covered: multidisciplinary, interdisciplinary, and transdisciplinary play-based assessment; flexibility of the Battelle Developmental Inventory; using observations in assessments; role of a facilitator and team members; parent participation in assessment; sharing observations and information; labeling; making recommendations; and writing a team evaluation report. Trainers of school psychologists were encouraged to increase courses and experiences available to students who were interested in serving preschool children and their families. Data from individuals attending the inservice training sessions indicated that the sessions were successful in increasing participants' understanding of assessment. (Approximately 50 references.) (Author/JDD)