Prior researchers have shown that school-aged staff can identify behavior function and function-matched interventions following training. Limited research has been done with preschool staff on the process of identifying function of behavior and selecting function-matched interventions to decrease problem behavior. A multiple baseline across participants’ design was used to measure preschool teachers’ accuracy of identification of behavior function and function-matched interventions. Participants analyzed descriptive data to identify function of behavior and select function-matched interventions. Results from this study demonstrated that preschool teachers can independently identify function-matched and nonfunction matched interventions with greater accuracy after training.