Taking the CSET: Health Science exam can be a daunting task. Because its goal is to test your classroom readiness across the spectrum of content, it covers a lot of ground. This breadth can make it hard to know how to prepare. Luckily, if you understand how the test is organized and what it is testing, you will have no problem prepping for this test. In order to cover everything, the exam is broken into 3 domains – which are then broken into 9 competencies.