According to page 137 of the Practice Standards (which I looked at for the first time just now, don’t ask me how I passed L1), it is proper reference to the CFA designation to say
- I passed Level I of the CFA examination.
- I am a 2008 Level III CFA candidate.
So your note on the resume looks fine to me. The main thing is you’re not claiming a partial designation, and have enrolled for the specified exam. You’re also not supposed to claim superior ability, so better stop that halo from descending, haha.