We moved the blog to medium about a month ago. Since writing this, we've tested a bunch of new things, and now have about 20% better precision on the quiz (20%

We moved the blog to medium about a month ago. Since writing this, we've tested a bunch of new things, and now have about 20% better precision on the quiz (20% increase in the percentage that we predict will pass and go on to pass). There are some other interesting results (one is that easy programming problems are about as effective at screening as hard programming problems). I'll be writing more about this, with the new data/results in the next few months.