Lettie Prell has been assisting policymakers to make data-informed decisions for over 35 years. In her career in Iowa state government, she worked with the parole board, the division of criminal and juvenile justice planning, and the department of corrections, from which she retired as research director. Ms. Prell is the developer of the Iowa Violence and Victimization Instrument, and co-developer of the Iowa Sex Offender Risk Assessment. Her other areas of expertise include prison population forecasting, performance measurement, analyzing the correctional impact of proposed legislation, and program evaluation. Ms. Prell is a past recipient of the Peter P. Lejins research award from the American Correctional Association.