LA has kinda a dual legal system that it inherited from the French and Spanish codified law system out of Napoleon (yes that one), and ultimately from Roman law.
https://en.wikipedia.org/wiki/Law_of_Louisiana
Just the first paragraph there is a confusing mess and the rest of the article doesn't get any better (to me at least).
Suffice to say, having to pass the bar is tough enough, but having to do it while 'speaking two languages' in terms of law systems is so much more harder.