Dr. DeCoster has 20 years of experience working as a statistician and methodologist. He has consulted and collaborated with researchers from many different fields, providing him with a broad range of statistical and methodological experiences. He has been a co-investigator on 19 grants from the Institute of Education Sciences, the National Institutes of Health, the Department of Veterans Affairs, and several private foundations. Dr. DeCoster has taught courses and workshops on a wide range of statistical topics. He has worked as a statistical consultant since 1996, both in person and online through his own free Internet statistical consulting service.