Rhode Island, like many other states, wants to better understand teacher mobility and attrition because of the adverse effects teacher turnover can have on student achievement and local education budgets. Leaders at the Rhode Island Department of Education want to understand what factors are related to teacher mobility, retention, and attrition, such as whether there are differences associated with the state's teacher preparation program providers or across teacher certification fields. This study used descriptive and statistical analyses to examine mobility, retention, and attrition rates for beginning teachers in Rhode Island. The sample included teachers who were trained in the state between 2012/13 and 2016/17 and who went on to teach for at least one year in the state public school system by the 2017/18 school year. [For the full report, see ED607604; for the appendixes, see ED607606; for the study brief, see ED607607.]