Psychopharmacological treatments have been used with increased frequency to treat a variety of internalizing and externalizing disorders in children. Given the potential impact that medication has on children's school performance, school psychologists should be involved in helping physicians and families make effective decisions by assisting with (a) diagnostic decision-making and determining the need for medication; (b) evaluating medication effects and determining optimal dosage; and (c) integrating medical, psychosocial, and educational interventions. Potential barriers to the adoption of these roles are discussed as well as clinical, ethical, training, and legal implications.A variety of medications have been found effective in treating both internalizing (e.g., anxiety disorders) and externalizing (e.g., attention-deficit/hyperactivity disorder [ADHD]) conditions (Phelps, Brown, & Power, 2002). Over the past several decades, psychotropic medication has been used with increased frequency to treat children with emotion and behavior disorders. An analysis of patient data from the mid-1990s found 6% of those under 20 had been prescribed at least one medication, a two-to three-fold increase from rates found during the mid-1980s (Zito et al., 2003. In a recent report on children and mental health, 20% of children have diagnosable psychiatric disorders with up to 10% of children exhibiting significant impairment in family, school, and social relationships (United States Department of Health and Human Services [USDHHS], 1999). Medication treatment has been viewed by some as underutilized, and changes in prescription rates are likely to continue as a result of shifts in conceptual models