ersi.info

Environment Rating Scales Institute (ERSI). The Environment Rating Scales Institute (ERSI) is an organization that was started by Thelma Harms and Debby Cryer. We provide a variety of training options for the Environment Rating Scales by the authors or our highly reliable associates, either in Chapel Hill, NC, or by special arrangement, in other areas. We are the only authorized trainers for the scales because we provide training to reliability using the authors� interpretations and procedures.