Foster care is a system in which a minor has been placed into a ward, group home, or private home of a state-certified caregiver, referred to as a "foster parent". The placement of the child is normally arranged through the government or a social service agency. The institution, group home or foster parent is compensated for expenses.
The State, via the family court and child protection agency, stand in loco parentis to the minor, making all legal decisions while the foster parent is responsible for the day-to-day care of the minor.
The vast majority of children who would otherwise need foster care are in kinship care, that is, in the care of grandparents or other relatives. Most kinship care is done informally, without the involvement of a court or public organization. However, in the U.S., formal kinship care is increasingly common. In 2012, a quarter of all children in formal foster care were placed with relatives.
In Australia foster care was known as "boarding-out". Foster care had its early stages in South Australia in 1866 and stretched to the second half of the 19th century. It is said that the system was mostly run by women until the early 20th century. Then the control was centered in many state children's departments. "Although boarding-out was also implemented by nongovernment[al] child rescue organizations, many large institutions remained. These institutions assumed an increasing importance from the late 1920s when the system went into decline." The system was re-energized in the postwar era, and in the 1970s. The system is still the main structure for "out-of-home care." The system took care of both local and foreign children. "The first adoption legislation was passed in Western Australia in 1896, but the remaining states did not act until the 1920s, introducing the beginnings of the closed adoption that reached it peak in the period 1940–1975. New baby adoption dropped dramatically from the mid-1970s, with the greater tolerance of and support for single mothers".
Foster care in Cambodia is relatively new as an official practice within the government. However, despite a later start, the practice is currently making great strides within the country. Left with a large number of official and unofficial orphanages from the 1990s the Cambodian government conducted several research projects in 2006, and 2008 pointing to the overuse of orphanages as a solution for caring for vulnerable children within the country. Most notably, the studies found that the percentage of children within orphanages that had parents approached 80%. At the same time, local NGOs like Children In Families began offering limited foster care services within the country. In the subsequent years, the Cambodian government began implementing policies that required the closure of some orphanages, and the implementation of minimum standards for residential care institutions. These actions lead to an increase in the number of NGOs providing foster care placements, and helped to set the course for care reform around the country. As of 2015, the Cambodian government is working with UNICEF, USAID, several governments, and many local NGOs in continuing to build the capacity for child protection and foster are within the Kingdom.