How does the leaderboard work?

The Leaderboard is sorted by points earned, all-time. 

You can also see the accuracy and questions answered for each listed user, but the ratings are based on points. You earn points by answering questions correctly. More difficult questions are worth more points.

The Leaderboard also lets you change the settings for the school year and subject, so you can narrow down the scope and get a better idea of the leaders in different subjects!