Passed test first time
I was very pleased with the product. I spent a week studying this along with InterNACHI materials. I took all the quizzes and tests. The gauge will tell you when you’re ready to take national exam. I took my gauge to 100% and then kept studying until my national exam.
The tests and quizzes get redundant, you will see slot of the same questions but just keep on sneering them as it builds your memory.