About 300 students showed up outside Melbourne's Flinders Street Station on Thursday to demand Israel end the siege and occupation in the Palestinian territory.
"Since we were here last, the truce has come to an end and the horrors have only gotten worse," one speaker told the crowd.
"We have to keep fighting until Palestine is free."
More than 14,000 people in Gaza have died since Israel declared war on Hamas on October 7 after militants crossed the border into Israel and killed more than 1200 people and took more than 200 hostages.
The Australian government lists Hamas, which controls Gaza, as a terrorist organisation.
Rally organiser Gisele, 17, said they were protesting to give a voice to the voiceless.
"We are here defying not only our schools but our government that is complicit in this genocide," she told the crowd.
The students also called on the Australian government to cut all ties with Israel until their demands were met.
The crowd marched down Swanston Street towards Melbourne Central shopping centre blocking cars and trams as chants of "Free Palestine" and "Israel out of Palestine" rung out to the curiosity of onlookers.
The students staged a sit-in at Melbourne Central shopping centre, where a large banner was unfurled calling for Israel to "End the Genocide", before ending the protest on the steps of Old Parliament House.
The students staged a sit-in at Melbourne Central and ended their march at Old Parliament House. (Joel Carrett/AAP PHOTOS)
Kaan, 15, felt helpless watching the conflict from afar and not being able to do anything about it.
"We're in Australia and not in Palestine. We can't fight back. The only time we can actually fight back is through a protest," he told AAP.
Former high school teacher Fiza attended to support the students, hailing the protests as "education in action".
"This is exactly what we teach them for," she said.
Similar rallies were held in Sydney, Canberra and Wollongong.
Two weeks ago, more than 1000 Victorian school students defied calls from politicians to stay in school and protested in the city.
Organisers claimed it was the biggest student protest for Palestine in Australian history.
In separate action on Thursday, a group of activists in kayaks in the Port of Melbourne blocked the path of a tugboat aiding multiple container ships carrying containers and operating on partner voyage with the Israeli company ZIM.
Police are speaking to a number of kayakers and several squads are on the scene with the situation ongoing, a Victoria Police spokesman said.
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