Today's school social workers are facing unique challenges in the workplace. The results of the 2009 New Mexico School Social Work Survey reinforced the idea that school social workers must be able to prove their effectiveness. Building on the school social work literature on practice outcomes evaluation, a more extensive statewide survey of school social workers was conducted in 2010 to explore further the extent to which they were prepared to evaluate, were evaluating, or had evaluated their own effectiveness. The results of this statewide survey suggest that school social workers in New Mexico are able to access their individual data as well as prepare for and evaluate their impact on student success. However, most do not have access to aggregated school social work data, nor do many share results of their work with decision-makers. Implications for school social work practice evaluation are discussed within the context of shrinking school system budgets and the fragile economy. (Contains 6 tables.)