Some of America’s top school districts rebuffed charges of failing to counteract a surge of antisemitism on Wednesday in combative exchanges with a congressional committee that has been at the centre of high-profile interrogations of elite university chiefs. Having previously grilled the presidents of some of the country’s most prestigious seats of higher learning in politically charged settings, the House of Representatives’ education and workforce subcommittee switched the spotlight to the heads of three predominantly liberal school districts with sizable Jewish populations. The hearing was presented as an investigation into how the authorities were safeguarding Jewish staff and students in...