The "Autism at-a-Glance" series provides a current summary of topics relevant to high school students with autism spectrum disorder (ASD) as well as practical tips and resources for school and community personnel and family members. This report was designed to help high school staff and family members in supporting adolescents on the autism spectrum as they learn to establish healthy sleeping habits. It discusses: (1) why sleep is important; (2) the need to seek support from medical professionals; and (3) strategies to improve sleep (explaining the importance of sleep to the adolescent; establishing a bedtime routine; creating a comfortable sleep environment; and ensuring diet and exercise habits are supportive of sleep).