This is the ninth brief in a series of Center for Law and Social Policy (CLASP) analyses of Head Start Program Information Report data. This brief provides information on Early Head Start programs, staff, and participants; including young children, pregnant women, and their families. It updates a similar brief that CLASP published analyzing data from 2003-2004. The data in this brief come from the 2005-2006 Program Information Reports (PIR), which each Early Head Start grantee is required to submit to Health and Human Services (HHS) annually. An analysis of the 2005-2006 PIR data, highlighted in the rest of this brief, shows the following key findings: (1) Early Head Start supports families with working parents--many parents also had limited formal education; (2) Early Head Start serves children and pregnant women from diverse racial and ethnic backgrounds; (3) Early Head Start provides a broad range of services to low-income children and their families; (4) Early Head Start provides services through a variety of program options; and (5) Early Head Start promotes better health for young children. (Contains 40 endnotes and 9 figures.)