I am not familiar with the operations of CPS in your country, but here in the states I've done a great deal of research over the years. Many children placed in foster care here in the U.S. are ultimately diagnosed with mental disorders and prescribed SSRI drugs. But I think across the board these questions need answered and maybe this person will shed some light.

#1) Are you familiar with the term "Akathisia"?
#2) While working in the agency did you find many cases of children being diagnosed with behavioral problems, anxiety, depression, ADD or ADHD after being placed in foster care?
#3) For those children that may be diagnosed with any of these problems do you know if they were then prescribed medication?
#4) To the best of your knowledge do you know if CPS staff are educated in the potential side-effects of these medications and receive specific training to address them?
#5) To the best of your knowledge and experience do you know if Foster Care parents are made aware of the potential side-effects from these medications and are they being properly trained to recognize a side-effect and act accordingly?
#6) While employed with the agency were you ever made aware of any promotions, encouragements or incentives to recommend any foster children to mental health for possible examination or treatment?

If you are not familiar with the term "akathisia" or if you want to see where my focus is as to why these are my questions for the ex-caseworker, my article will explain.

https://steemit.com/fulllyinformedpublic/@vickiebarker/family-protection-what-is-akathisia