Parents and teachers of children with autism spectrum disorders (ASD) are often presented with a confusing array of intervention options that vary considerably in their level of research support. Logical sources of information and guidance are the web sites of national autism associations. This research examined the quality of the information that is available on the web sites of national autism associations with regard to educational and therapy interventions. Rankings derived from current research evidence on interventions were compared with those available on web sites to determine whether or not this information was consistent with current research evidence and the stated aims of the organisations. Overall, these sites provided limited guidance for parents and teachers with regard to the selection of research-based interventions. Several options to improve the information available are discussed. (Contains 5 tables.)