Reading Time: 2 minutes What is comparative assessment and how can teachers use it in their classroom? Psychologist, Louis Thurstone, published a paper on the law of comparative judgment in 1927! Thurstone’s method of comparative judgement exploits the power of adaptivity; in scoring rather than testing. There has been a recent and welcome revival of comparative assessment, but it has been around for a long time and one could argue that we are 90 years too late. With an influx…