Mr Walker was a technology teacher at the secondary school
A disciplinary hearing involving a teacher who is a member of the British National Party has been postponed over fears it could lead to public disorder.
Adam Walker, 39, from Spennymoor in County Durham, is accused of expressing religious intolerance via the internet.
He was due before the General Teaching Council (GTC) in Birmingham on Tuesday.
But after recent clashes in the city between right-wing activists and anti-fascist campaigners, police have requested a temporary adjournment.
West Midlands Police said in a statement: "Previous hearings have attracted supporters of Mr Walker and counter-protesters, and incidents of disorder have followed.
"Those incidents and current concerns from sectors of the community over the timing and venue of the hearing meant a postponement was the best option to ensure public safety."
The GTC said that, along with Mr Walker's representatives, it agreed that the "nature of the concerns raised by the police are sufficiently serious as to justify the adjournment of the hearing at this time".
It added that there would be discussion about arrangements to hear the case at a future date, and possibly at an alternative venue.
Mr Walker is accused of engaging in unacceptable professional conduct while employed at Houghton Kepier Sports College, near Sunderland, in 2007.
The former soldier, who is said to have used a college laptop to express his views, has since resigned from his post as a technology teacher.