Hundreds of Sydney school kids are marching in the CBD today, part of a national climate change protest movement.

The protest gathering started at Sydney Town Hall before the group marches to Hyde Park.

Thousands of school children have abandoned class to take part on the day of action.

Video: Climate Change protest on Sydney

A number of schools have thrown their support behind the protests.

“As a school we are supportive of providing for student voices and [we] support their passion about policies and decision-making,” a school principal told ABC.

“We have encouraged all of our students to foster vision and not blame, to become the changes they seek to see in the world.

More updates as the rally unfolds.

Live Video: Kids Climate Change protest in Sydney – SBS News