All state exams use the ISO, The Insurance Services Offices general policies to create the exam. This is what I teach off. The bulk of every state exam is the same from one state to another.
They all share the most common, most tested topics and all my class series are built around that. There are state specifics you'll need to know, but those will come from the State Approved Courses like Xcel, Kaplan, Examfx, etc.
My class series complements those courses and I make them make sense, even the state law/insurance regulations chapter. I'll explain the department of Insurance, the role of the commissioner/director, unfair trade practices and what numbers are important to focus on, but you'll use your state approved course to get those numbers.