“Now they have got a knife arch in place, surely other schools and parents – and the children – know that there is a need for knife arches in all schools and colleges,” said Mrs Willgoose.
“You are putting yourself in more danger carrying knives. There are no winners on either side.”
Andrew Hartley, deputy chief executive of The Sheffield College, said knife arches would be rolled out at all the site’s campuses from next week and “continued and increased random” searches would take place.
“We will continue to focus on educating our students about the dangers of violent crime and the destruction it can cause through tutorials and other sessions,” he said.
Security staff would trial body-worn cameras from January, he added.
On Monday Mrs Willgoose joined others in handing out bleed kits containing potentially lifesaving first aid equipment to schools in the city as part of the Binning Knives Saves Lives campaign.
She said the kits were part of her son’s “legacy”.
A 17-year-old boy who was arrested on suspicion of affray and possession of a bladed article after the reported fight at the college on Tuesday has been bailed pending further enquiries, police confirmed earlier.