“The subject tests, in contrast to the Scholastic Assessment Test (SAT), place a greater emphasis on knowledge rather than working under pressure. As a result, you may find certain subject tests such as EST2 or ACT2 to be comparatively easier than EST1 or ACT1. These subject tests are available in two levels. Let’s consider EST as an example. Level two encompasses a broader range of lessons and is considered more challenging than level one. However, it is important to note that there is no distinction in college applications between level one and level two. Therefore, there is no compelling reason to opt for the more difficult level two unless you specifically desire a greater depth of knowledge in the subject area.” and here is a link of a video that will help you understand more  https://youtu.be/6rwCLMJUW2c?si=KL7RLmrg3GFRH2Er