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If you are a light user (max 100 quizzes per month), Yacapaca is free for you. Otherwise, we expect you to make a contribution to the community in return for the value you get. That can come as cash to help us run the service (i.e. buy a subscription), through authoring new quizzes or promoting our Prizes! revision scheme to parents.
Every time a student uses a quiz you have written, it gets counted towards your Author Rank. You can see your Author Rank under More->My Profile. It is based on quiz runs over the last 12 months. The higher your author rank, the more free credits we add to your subscription. The top authors earn enough to keep Yacapaca free for their entire school.
If you are already an author, the easiest way to boost your author rank is to improve the quality of your existing quizzes and courses, so that more teachers choose to assign them. There are several useful articles on improving your authoring here: http://yacapaca.wordpress.com/category/authoring/
Prizes! revision scheme
The Prizes! revision scheme gives students self-managed access to our unique individualised learning system that will boost their grades at GCSE. Prizes! uses Computer Adaptive Testing (CAT) to select questions from our bank of 130,000+ that match each student's current attainment level. It sequences them with an Ebbinghaus Forgetting Curve revision schedule to ensure that material once learned is not forgotten. As far as we know, it is the only system in the world that does this.
We ask parents to pay £4.99/week for their child to use Prizes! with no minimum set period, so it's not exactly expensive. Generally speaking, parents will use it if a teacher recommends it. If you think it would be useful for your students, you should make sure that you ask parents to sign up using your tracking key (click here to see your key).. For every new student who is signed up (even if it's only for one week) we will add 000 quizzes to your monthly allowance for the next year. This way, parents supporting their own child are indirectly supporting every child in the school.