foster parents are awe inspiring people. unfortunaly the media tends to focus on the "bad" vs. the overwhelming number of good.
anyone who perceivs this to be a "money making" proposition is greatly mistaken. i have never known a foster parent who did not expend far more financialy (we won't even go into emotionaly) than their allocation.
one of the greatest advents to the system has been the ILP that most states have implemented. an independant living program makes every difference for a child who will be severed from the program on their 18th birthday.
i advise anyone who is interested in foster parenting to seek out foster parent support groups in their area, you will learn so much more from actual foster parents than any publication can reveal. if you have a bad experience with foster parenting make sure to document it and submit it to the agencies (as well as those who oversee them) you deal with (change happens slowly but fortunatly it is one system that does constantly revamp and revise).
burn out is common among foster parents (and foster care staff-that's why the person you talk to today may not be there this afternoon. in most regions the staff is largly new hires who will likely transfer the moment they are eligible to do so). the circumstances are difficult at best, and the system is in no way "user friendly" (a showing of hands-how many placements have you gotten that mandated immediate medical attention but had a pending status for medicare?) and it gets even more difficult when the dependancy is based under a differing state's jurisdiction

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adopting a foster child in one's place happens but it is rare (some states have specific mandates that exclude a foster parent from consideration as an adoptive parent for a child who has been in thier home as a placement) so it is never advisable for anyone to enter into foster parenting with ideals of it leading to adoption (family reunification is the #1 goal, and while the family members in close association with the child may be severly lacking there is always great effort to find a blood relative for guardianship or adoption).
that said-again, foster parents are special, special people who i admire greatly.