There were more than 19,000 nonprofit organizations devoted to supporting public education in the United States in 2007. These organizations include booster clubs, parent-teacher groups, public education funds, scholarship funds, high school alumni associations, and others. While most of these organizations are small, together they spent roughly $4.3 billion in support of public education in 2007. This report assesses the current status of education support organizations in the United States; provides details on the activities, capacities, and resources of public education funds; and compares Public Education Network (PEN) member organizations with other types of education funds. On the basis of a survey of public education funds and an analysis of the latest data available from the National Center for Charitable Statistics, the report identifies key similarities and differences among the groups. Public education funds are dedicated to assisting public schools and school districts by raising money to support programs for teacher training and support, after-school programs, and school supplies and by promoting community support for public schools. The project was commissioned by PEN in Washington, D.C.