The frequency and duration of ABA sessions recommended for your child is determined on evaluation. ABA sessions at Milestone Therapy typically range from 2 - 7 hours on average, bringing your child to 10 - 40 hours per week in ABA Therapy. Various factors come into play when deciding the most appropriate and effective amount of time that your child should spend in ABA Therapy each week. While this many hours of therapy may seem daunting at first glance, these hours are based on research findings related to the most effective intensity of ABA Therapy for positive outcomes.