Mark Duerr, Executive Director. Working as an evaluator since 1977 and receiving his MPA in 1979, Mark opened Duerr Evaluation in 1981 to pursue his dream of creating a new brand of collaborative evaluation for clients. As Executive Director, Mark not only manages the organization but also works day-to-day on evaluation contracts, providing technical input on reports, developing evaluation plans, leading collaborative meetings with clients and stakeholders, and making public speaking appearances. He was selected by his peers to facilitate a session on evaluation ethics at an international evaluation conference and has contributed several publications in the evaluation field. Mark has been married since 1983 and has two children.