Caru Cymru

Calling all schools! Join our Great Big School Clean.

At Keep Wales Tidy, we firmly believe that no one is too small to make a big difference. And, when we all come together, that big difference can become huge!

If every child who attends school in Wales picks up just one bag of litter during the Great Big School Clean, we could remove an incredible 500,000 bags of litter from our natural environment.

How to join the Great Big School Clean

You can hold a clean-up (or several clean-ups) anytime between 15 and 31 March, collecting as much litter as you can. You might want to organise your clean-ups during playtime, lunchtime, lesson time, before school or after school — it’s totally up to you.

Let us know how many pupils will take part, for how long, and how many bags they are pledging to collect by filling out the form below. We welcome nurseries to join us too!

What are the benefits to pupils?

  • Clean-ups are fun and rewarding.
  • Children are able to make a difference to their local area and the world they live in.
  • Litter picking provides opportunities for learning, can be linked to the Curriculum and counts towards your Eco-Schools Green Flag.
  • Your school can create strong links with the local community.
  • Clean-ups improve environmental awareness among pupils.
  • Litter picking can also help with children’s mental health and wellbeing by keeping active and connecting with one another.


Level up your #GreatBigSchoolClean: Free live lesson with education experts!

Boost pupil’s learning and environmental impact with a free, interactive workshop delivered by Eco-Schools Wales experts! This live session dives deep into the issue of litter, exploring its origins, consequences, and solutions. Empower your students to become informed environmental champions!

Register your class now.

Make the most of your clean-up

Here you’ll find ideas for your pupils, inspiration and advice for your Great Big School Clean event, as well as resources to help you spread the word.

Find out more

Not part of Eco-Schools? Discover the benefits

Friendships made. Behaviours changed. Confidence gained. You can’t underestimate the benefits of being part of the Eco-Schools family.

Learn more