Bradworthy Primary Academy has become the ninth school in the UK to be awarded plastic free status.
The school completed five objectives, set by Surfers Against Sewage, after watching a documentary about the state of the oceans.
The school’s Class 4 formerd a ‘resistance group’ to spread the word about environmental damage.
They also held a whole-school boycott day to stop using plastic water bottles and raised money for SAS at the same time.
Pupils wrote to MP Geoffrey Cox, as well as Theresa May and Jeremy Corbyn, asking them to join the fight against plastic.
They also wrote to manufacturers about the plastic found during a beach clean on Westward Ho!
Teacher Sadie Davies said the school had made great changes and added: “We have really enjoyed being part of this campaign and it has made us realise that you should not underestimate the power of your voice.”
Find out more about the Plastic Free North Devon movement here.