This Advanced Workshop in one step toward training professionals to be certified therapists in an early behavioral intervention for children with autism spectrum disorder (ASD) called the Early Start Denver Model (ESDM). Upon completion of this training, the trainees will submit additional materials to the trainers, who will evaluate their competence in delivering the model. If criteria are met, the trainees will be certified to provide ESDM to young children with ASD in their communities. This training is necessary to ensure widespread access to trained professionals who can help improve the lives of individuals with ASD.