A child being subjected to fostering is not left unscathed. Developmental phases, contact issues, tragedy and such can and will have an impact on the child while in foster care.

Have you "picked up" on changes in your child (biological or foster) that are attributed to the child being in departmental care?

What sort of behaviours or behavoural changes have you witnessed?

Do you have advice or ideas on the causes or ways to divert behaviours into more positive reaction?

I've noticed a common underlying one that is purposely ignored and that is negative, risk taking behaviour from the child showing underlying depression from these children!

Another issue is education absolutey suffers, grades drop and behavioural issues appear or severly increase...

Yes, true.

Not to mention that those children who don't have the mental capacity to voice their thoughts and feelings (very young children) will express it in other ways.

In the younger child, it can often be exhibited in ways such as excessive temper tantrums, juvenile verbal abuse (EG: "You're a fat cow!"), damage to personal property, physical violence and even self harming.

For a child younger again (the infant and toddler) it is often exhibited through health, excessive emotion, continuous sleep issues and many other things.