We will be evaluating the impact of revised implementation of the Tech Kids Unlimited (TKU) program for youth with Autism Spectrum Disorder (ASD) and Attention Deficit Hyperactivity Disorder (ADHD). The month-long TKU program curriculum will be grounded in Universal Design for Learning (UDL) and Mayer's (2008) evidence-based principles for effective multimedia instruction, while emphasizing both technical and social skills necessary to succeed in STEM industries.