I put a few images to give you an idea of some concepts I liked or to consider. Just use these as concepts please, and feel free to go beyond this.
I would like to have a professional logo for engineers taking the PE Exam. Think about things related to engineering, and try to instill that. Just because we are engineers, though, don't make it too boring! Most people taking this exam are twenty-somethings, so keep that in mind.
Also, I did want to mention that if the layout, etc requires it, that you can use 'Ace the PE' in lieu of 'Ace The PE Exam'.
The Site is AceThePE.com for your reference. ( I can change the color scheme of the site, so don't worry about that... )
I am looking forward to seeing some quality and creative logos!