These practice tests include materials such as infection control, skin care products/knowledge/treatments, skin types and conditions, treatment room information/protocols, safety guidelines, and scientific concepts. A lot of these questions are very similar to what will be on your State Board. As State Board is timed for 120 minutes, so are these practice tests and they are broken up by increments of 20 (more practice tests will be added). I recommend going through the tests as many times as possible. What you get wrong is what you should focus on most. What you get right is what you are already an expert on. This will be an extra tool to study for your State Board examination written test. However, this is not to replace your personal studies, so you should still have your own studying techniques like looking through your course materials, studying with peers, and talking with your instructor in addition to my practice tests here on Udemy. The key is to take these practice tests seriously as you would the real State Board and apply yourself to the best of your ability. I hope this is helpful and feel free to ask questions! Cheers to being Licensed Aestheticians. There is nothing like holding your license in your hand.