Attention deficit hyperactivity disorder and ASD are two common neurobiological disorders in school-age children. In fact, approximately 6.4 million children between the ages of 4 and 17 have been diagnosed with ADHD since 2011 (Centers for Disease Control and Prevention, 2017). More recent prevalence estimates suggest that five percent of all school age children carry an ADHD diagnosis (American Psychiatric Association, 2013). With respect to ASD, approximately one in every 68 children in the United States have been diagnosed with ASD and 1-2% of North Americans identify as having ASD (Centers for Disease Control and Prevention, 2016). School psychologists must not only possess competencies necessary to evaluate for these disorders due to their common appearance, but also because the Individuals with Disabilities Education Act (IDEA, 2004) directly references these disorders as possibly requiring formal special education services. This article explains national regulations regarding ADHD and autism spectrum disorder, reviews current regulations, shares findings by jurisdiction, and describes possible barriers and solutions.