Thousands of students across Australia are walking out of classrooms to take part in the protests on Friday.

Premier Annastacia Palaszczuk says she doesn't agree with skipping school to demonstrate.

"I honestly believe a weekend would have been a great opportunity for not just students, but for families and the broader public in general to support issues around climate change," she said on Friday. 

Opposition leader Deb Frecklington agreed the students should be in class. 

"Kids should not be striking," Frecklington said.

The Queensland protests are set to take place in cities and regional centres across the state including Townsville, Whitsundays, Mackay, Bundaberg, Sunshine Coast, Gold Coast and Beaudesert.