The MSHS Study is a nationally representative study commissioned by the U.S. Office of Health and Human Services' Administration for Children and Families that will describe the characteristics and experiences of the children and families who enroll in MSHS and the practices and services of the MSHS programs that serve them. The MSHS Study draws heavily on the Design for MSHS Survey Report (2011) and is informed by the current context of key policy and programmatic issues and broader issues impacting the lives of migrant and seasonal farmworkers and their families.