Student climate change protesters have called on teaching unions to act after claiming they were refused catch-up notes after taking part in strikes.

Thousands of students have taken part in the global protests in recent weeks.

Read more: Glasgow students stage third protest against climate change

Now some say that, although they were not being punished for skipping class, teachers have failed to provide catch-up resources when asked.

Speaking to the Scottish Greens' Spring Conference on Sudnay, protester Holly Gillibrand, 13, said: "Our headteacher is really supportive.

"But a lot of the teachers, especially those who teach on Friday afternoons, are not supportive at all.

"Because we've been given permission from our parents and the council, they can't do anything directly."

Read more: Students campaign worldwide for action on climate change

She added: "They've been doing things to basically spite us."

The Educational Institute for Scotland union said that it was "unreasonable" for students to expect special arrangements.

Larry Flanagan, general secretary of the EIS teaching union, said: "If the bulk of the pupils are in the class and the teacher is teaching them then it would be totally impractical for schools to take a period out of the following week to revise what one or two pupils missed.

"Schools don't have the capacity anyway and the rest of the class would just be marking time.

Read more: Pupils 'will not be punished' for climate change strikes

"At this time of the year teachers are particularly stretched because they will be working flat out to get pupils ready for exams.

"If there are class hand-outs or homework tasks that have been set then they would be passed on, just as if a pupil were absent through illness, and they could do those at home.

"However, it is unreasonable to expect special arrangements to be made for a handful of pupils who have missed whole lessons."