Looking at the source, higher scores are better. There are a bunch of tests, and each one produces a score from 0 (bad) to w (good) for some w. The total score

Looking at the source, higher scores are better. There are a bunch of tests, and each one produces a score from 0 (bad) to w (good) for some w. The total score is the total of all these. Given that all the other numbers on the page are ones for which smaller is better, I think the main score itself should be accompanied by a note saying explicitly that higher scores are better.