This setting is for the whole school and can only be accessed by the school's Primary Account Holder. If you're not sure who this is, email info@thisisschool.com.
Click on your name in the top right-hand corner and select Settings.
There are 3 leaderboard settings:
Hide your school's individual class leaderboards This setting controls whether or not teachers and students see an individual leaderboard for each of their classes.
Hide the leaderboard ranking classes within your school This setting controls whether or not teachers and students see a leaderboard of all the classes in your school.
Do not participate in global leaderboards This setting controls whether or not classes at your school compete against other classes using This is School around the world.
Once you’ve decided which leaderboards you’d like to enable, just click Save.