@AviK
ADAs get in house training to be prosecuting trial attorneys. They are expected to have a working knowledge of criminal law, and research specifics when needed.
Law schools do not teach students how to be trial attorneys. That is something learned under the tutelage of experienced mentors after passing the bar and beginning work.
Most attorneys never do trial work. The English system has two classes of attorneys: solicitors who do most work and Barristers who do trial work.
I don’t do criminal work as a rule. Anything more than an initial; appearance I help my client find an appropriate attorney who is skilled in the specific area of the law. A DUI lawyer is different form a white collar crime defense attorney.
This doesn’t mean I couldn’t research the law and defend a client if I had to. Sometimes you can’t get out of a pro bono assignment from the court