WorkSafe issued the notice for workplace bullying procedures in March last year and it was complied with by May.
Damascus College co-principal Sister Marie Davey said there had been an allegation of bullying at the school, but it was not verified.
She said there had been an anti-bullying process in place.
"As a result of the allegation, we went through the procedures and found there was no grounds, but also in the process we upgraded the documentation.''
Sister Davey said the school had not experienced problems with workplace bullying.
"I'm not aware of there being any substantiated allegations at the school," she said.
WorkSafe is holding a series of seminars across the state to re-inforce its anti-bullying guidelines starting at the end of the month.
A seminar will be held in Ballarat on May 15. The 90-minute briefing will cover areas including what is bullying, strategies to prevent it, and managment of it.
For bookings and further details go to www.worksafe.vic.gov.au