Lancaster University has published findings from research, funded by the Nuffield Foundation, looking at outcomes for children placed on supervision orders and children who were subject to special guardianship orders in England between 2010/11 and 2016/17.
Findings from a study of 19,296 children who returned home after care proceedings and were placed on a supervision order show that 20% are back in the family court within five years because of further significant harm. A study of 21,504 children subject to special guardianship orders found that 5% had further care proceedings within five years.
Further details are available here.