Allen,
I agree with you. As a former foster parent we sometimes got kids that had been in some really abusive, terrible foster homes. Those people were regarded as "saints" and "model" foster parents. Because of this, one home in particular never got investigated despite what kids reported. I got three of the girls that had been at the home and I reported what they told me, but was told they (girls) made it up to get even. A few years later a 16 yr. boy, who had been placed there with his younger brother, blew his head off. He was a very loved young man, on the honor roll and a letterman. My kids (and many others) were friends of his and he worked summers for me. After his death, it finally came out the emotional abuse and cruelty he had been subjected to. 
Most foster/adopt parents are good people trying to provide a healthy, caring environment for young people as they and their families try to work on reuniting but OCS needs to do a better job of at investigating foster/adopt homes.