If you look in your gradebook for any given student set, you will see that all the results are reported in the grade scheme you chose for that set. It’s easy to take that for granted and not think about how it is achieved – at least I hope it is, because we have worked hard to make the enormous complexity of that task invisible to casual users.

Although teachers very rarely challenge the accuracy of Yacapaca results, I do occasionally get asked about their Continue reading →