Nick Gibb's comments pile further pressure on the prime minister over the crumbling concrete scandal.
"You musn't like your nieces and nephews very much," Nick Gibb was told.
More than 100 schools have been ordered to completely or partially close just days before pupils are due to return.
"Why should teachers have any respect for your government?"
The UK Health Security Agency said the measure was “rare”.
Long-serving MP submits letter of no confidence: "To restore trust, we need to change the prime minister."
The daily testing of contacts of those infected with Covid could replace quarantine, Nick Gibb suggests.
One headteacher in Hertfordshire has already been sent a “minded to direct” letter from schools minister Nick Gibb warning emergency powers could be used.
Parents gathering at the school gates pose more of a risk of coronavirus transmission, government scientific adviser stresses.
The list inevitably features education secretary Gavin Williamson as the government faced the music over its exams fiasco.