The Screening Test for Emotional Problems–Self-Report (STEP-S) was designed to assess students aged 10 to 17 years referred for wide-ranging emotional disturbances categorized under the Individuals with Disabilities Education Improvement Act. Preliminary analysis indicated that subscale coefficients alpha ranged from .76 to .85 and test–retest coefficients from .65 to .79. Confirmatory factor analysis indicated a marginal fit of the five-factor model to the data, whereas substantial support was provided for diagnostic, convergent, and discriminant score validity.