My friends at Mindyourfootprint have created a fun & educational activity book that shows you how to link your Earth Hour activities with your Eco-Schools work!
You can download it here, play and learn!
Footfella’s Earth Hour 2016 Activity Book

And here’s a guide on how to use the activity book and organize a drawing contest at your school:
Footfella’s Earth Hour Teacher Guide 2016

If you want to have a better idea see how it all went last year here is a case study:
Case Study

If you have any feedback or comment for me you can send it here!
Have fun!