Please check out David Cohen's article in the Evening Standard which paints a grim picture of the outlook for children placed in English Pupil Referral Units (PRU's) in contrast to a more nurturing system used in Glasgow:

'Saving troubled teenagers is a tale of two cities'

https://www.standard.co.uk/news/education/saving-troubled-teenagers-is-a-tale-of-two-cities-a4327386.html