no matter what level you are interviewing for, whether associate or mail clerk, they will be seeing if you have a professional demeanor. Can you stand in front of a powerful partner and express yourself well? if you are in front of clients, can you string together a sentence that won't make the partners look bad? If interviewing for a marketing role, you need to understand the difference between selling things (products) and selling services. Because a law firm is selling people (services). As with any job, do your homework - read the "about us" page to understand the history of the firm. They are very proud of the history. Know how many offices they have and where. Know the ratio of partners to non-partner lawyers. And know the practice areas.
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