When I tried on singularity, I reached 60% after just a few evaluation tests. And now I'm almost dropping below 50%. At least half of the "right" ones are too hard for us, and some of the points are not that convincing.
After the set is updated, I wish there's an option where we can start fresh, setting rate to 50% and start brand new evaluation process, to get rid of our poor history.
And to help us doing this, can you post some statistics about our samples? like the rate of exoplanets, how many have only one points, how many have periodic points, and how long is the period? I think some prior knowledge would help a lot.