Being known to SS does not mean a child is being currently monitored. Once a child is taken out of school by a parent and supposedly home educated they fall off the radar. Tens of thousands of teenagers across the country every year are in this position- often the most vulnerable teenagers.
In secondary schools in particular, parents give in to challenging children who might refuse to attend, or might be extremely challenging at school with behaviour, or are living in chaotic families where school and stability are not important. Parents can not cope and saying they are home educating is a way for parents to get authorities off their backs and the teenagers to stop being such a big problem for them. So they write the letter informing the school/council. Until very recently, that was all they had to do.
Those children, who may or may not have been known to SS then become invisible because no one officially has an eye on them or helps them. They often receive no education at all, are in bed most of the day and/or on the streets day and night involved in all kinds.
There should be a register. Parents should be challenged and checked up on to see they are providing the amount of hours and covering exam curriculum and National curriculum and that teenagers are being assessed and entered for exams. Local authorities should have a responsibility to see and check up on this regularly. I don't know why anyone would object to that.
I won't sign the petition but would sign one for such a register to be put in place.