It took me 4 times to pass the test. I always felt good after taking the test (EXCEPT the 1st time) but could never figure out why I was failing. Test 1 (31/80) I took an online Testmasters course, Test 2 (42/80) I added complex imaginary and Power PE Technical Study Guide, Test 3 (47/80) I added Graffeo... I finally realized I must be missing something fundamentally. I caught my self working out problems because "this is how I've seen it done" versus "this is why it is done." For me that was a big difference because we all know how they like to change up wording in the test and get us out of our comfort zone. Zach Stone's Electrical PE Review was the difference maker for my 4 time. His prerecorded and live classes helped me develop a better understanding and build a better foundation. If any of you felt like me on the other tests I highly recommend Zach's class to help you prepare for the next time. I took it for two months... I recommend doing all the free classes before signing up. I also never participated in the live classes just because they run late... I actually preferred this because I could print out the completed notes then watch the class and add to the notes (time saver for me). Hope this helps!