Passed at 29 on first attempt. Shameless plug for School of PE. I am curious though, the ones who are 21 +/- a year, are you in a state where you can take the test prior to having the experience requirement to be licensed? I have heard this is becoming more popular. Personally, I took it as soon as I was eligible in my state. Add schooling for a masters degree and a few years working without having a PE to work under and here I am. I do have to say that it was somewhat interesting, albeit difficult, to go back and relearn all of the things I had forgotten how to do since undergrad.