A group of school students preparing for a nationwide strike over climate change inaction have prompted the closure of Bill Shorten's electorate office, on the advice of federal police.

About 20 students from the Victorian town of Castlemaine travelled to the Opposition Leader's Maribyrnong office on Thursday but were denied entry by security officers, who also requested the help of Victorian Police.

The young activists have been striking from school at least once a week throughout November to call for significant political action to address climate change.

"I'm going on strike because I believe that right now, temporarily sacrificing my education is what I need to do to save my future," said Year 5 student Callum Neilson-Bridgfoot.

Students have already protested at the Bendigo offices of Labor MP Lisa Chesters and Nationals Deputy Leader Bridget McKenzie.

The ABC understands that about 40 people had protested at Mr Shorten's office earlier on Thursday and had made several attempts to enter the building and talk with staff, but police and security did not allow it.

The students arrived after the earlier group had dispersed, at which point police returned.

Students also protested the proposed Adani coal mine at Bill Shorten's electorate office. ( Supplied: Charlie Wood )

"We tried to talk to Bill Shorten and we went up to his office and straight away they kicked us out and wouldn't let us through the doors," Year 9 student Tully Boyle said.

"We even called their Canberra office and there was a young man who picked up the phone and had a little chat but didn't say we could have a talk with anyone."

A spokesman for Mr Shorten said the office had not been advised about the students' visit and said it would be "happy to arrange a meeting in the future".

"The office was temporarily closed on the advice of the Australian Federal Police," he said.

"Bill was in Sydney launching Labor's plan for more renewable energy and cheaper power. Bill takes climate change seriously."

He said office staff had no say in the actions of the building's security, which moved people out so other tenants would not be affected.

Students taking inspiration from overseas activism

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The Castlemaine movement was inspired by the actions of 15-year-old Swedish student Greta Thunberg, who has pledged to protest outside Parliament House in Stockholm until the country catches up on its commitments under the Paris Agreement.

Some students have also taken inspiration from a landmark climate lawsuit filed by 21 teenagers in Oregon against the US Government for failing to take meaningful action against climate change.

They argue the lack of significant action to reduce carbon emissions violates their generation's constitutional rights to life, liberty and property.

"We are quite worried about our futures because at the rate the Government is going, it's not going to be a good future for us," Tully said.

"Climate change is a massive emergency and none of the politicians seem to be taking it seriously and we need them to."

Deanna Athanasos says students are feeling pessimistic about climate change but still have hope. ( ABC Radio Adelaide: Malcolm Sutton )

School students from across Australia to strike

The students' actions have inspired a national School Strike for Climate campaign that is expected to draw hundreds of students from around the country to state and territory parliaments on November 30.

Thirty strike action events have been planned but that number is expected to grow.

Adelaide Year 10 student Deanna Athanasos is among those who will rally at the South Australian Parliament.

"A lot of students are really pessimistic because they know a lot of bad things are very likely to happen, but I also know that a lot of them think stuff will change and it can get better."

She said word about the protest was starting to get out as students vented their frustration with all sides of politics for delayed action in significantly reducing carbon emissions.

"But the ones that are currently in power and want to stay in power so badly that they're not going to do anything strong to stop climate change really frustrate me," Deanna said.

She added that while education was "super, super important" for her future, so too was "stopping the really terrible effects of climate change".

"The future is going to be pretty bad if I'm living in a world with no Great Barrier Reef and constant droughts, hurricanes and other really bad things that will come from it if politicians don't take any serious action on climate change."