Staff tell of teachers and other workers being slapped, and bottles thrown in corridors.
Aberdeenshire Council earlier agreed to the parade in Stonehaven, which hundreds of people objected to.
A panel finds Alan Buchan behaved in an "argumentative and antagonistic manner" towards a port worker.
The blaze broke out in the early hours of Friday at Dales Park Primary in Peterhead.
Firefighters were alerted to the incident at Dales Park Primary at about 03:00.
Aberdeenshire Council agreed the parade to commemorate the anniversary of the Battle of Boyne on 27 June can be held with conditions.
Organisers have proposed holding the procession on 27 June.
The Accounts Commission says Aberdeenshire Council is well run but faces "challenges".
It was banned from marching through the town two years ago to mark the opening of a new lodge.
