Almost 400 year seven and eight students from the Warrnambool high school formed a giant 'NO' on the central school's oval at 12.30pm.

The group were dressed in orange and waved orange sheets of paper above their heads.

The symbolic gesture, captured by a drone, was part of a National Day of Action against Bullying and Violence.

The demonstration is an annual event in which students from all over Australia take a collective stand against such behaviours. The campaign has been held for nine years.

Year eight student Jasmine Pronk said this was the first time Emmanuel College had taken part in the campaign.

Miss Pronk is one of the school's 'Impact' students who work together with Brophy Youth and Family Services to assist in the wellbeing of her fellow classmates.

"We wanted to join in and spread the message that bullying is not okay," Miss Pronk said.

"This is just something little we can do to help out but it's worth it."

Brophy's Anna Sanderson said it was important teens engaged in public demonstrations such as today's event.

"They've done an amazing job organising this today," she said.

"It's important they can join this campaign, which is expected to be the biggest one yet. It's great to see them make such a stance against bullying."

The group join 2.4 million Australians in dressing in orange and sharing their message through local and national online mediums.

The students also collected gold coin donations which will be donated to the cause.

Warrnambool College held their Bullying No Way event on Thursday.

Youth who feel they are being bullied are encouraged to go to Kids Helpline or call them on 1800 55 1800.

The Bullying no Way site describes bullying is "an ongoing and deliberate misuse of power in relationships through repeated verbal, physical and or social behaviour that intends to cause physical, social and or psychological harm.

"It can involve an individual or a group misusing their power, or perceived power, over one or more persons who feel unable to stop it from happening."