Kids have been going back at roughly the same rate all over England and the Leicester outbreak has not been replicated anywhere else as far as I'm aware.
Not everywhere. A common reason for some not opening is older schools that have been around for a long time. There are several around here and as far as I am aware have remained closed. A place like Leicester may have some as well. The most recent info I have seen on outbreaks in schools etc is this
106 outbreaks were from care homes where 75 tested positive for SARS-CoV-2
28 outbreaks were from hospitals where 24 tested positive for SARS-CoV-2
44 outbreaks were from schools where 23 tested positive for SARS-CoV-2
2 outbreaks were from prisons where 1 tested positive for SARS-CoV-2
43 outbreaks were from the Other Settings category where 28 tested positive for SARS-CoV-2
Schools have been increasing slightly for 3 weeks. Something like doubled. Care homes stable. Others a bit up and down.