Education Secretary Damian Hinds has responded to calls for tighter regulation of children being schooled at home and announced plans for parents to register them with the local authority.
The estimated 60,000 home-schooled children in England and Wales include an unknown number within the Charedi community of Stamford Hill.
But Charedi activists have warned home schooling could increase if schools are forced to teach certain subjects under the government new relationships and sex education curriculum.
Mr Hinds said the term “home education” includes “children who are not getting an education at all, or being educated in illegal schools where they are vulnerable to dangerous influences”.