Jewish schools will get extra security guards after the government gave £3 million to keep pupils safe amid rising antisemitic incidents following the violence in Israel.
Security and police patrols had already been increased, with pupils in some schools told to take off blazers in case it led to abuse.
Detentions have been cancelled and school trips have also been postponed.
The Community Security Trust (CST), which provides protection for Jewish communities in the UK, said there had been 139 antisemitic incidents since Hamas launched an attack on Israel at the weekend.
