Go to Task 9 at the bottom. 40-someting schools had people score, about 102 people scored on that task (more completed it though, not sure what the difference is, hand counted so may have miscounted).
Correct, which is why I say 100-something. For some reason, they put all the schools in every table. Just a guess, but I assume "scorers" are only people who solved it in the limited time window.