Legislative Coordinator applicants have rated the interview process at National Wildlife Federation with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 53.1% positive. This is according to Glassdoor user ratings.
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One interview, pretty basic overview and questions, around 1 hour long. Went over about 20 minutes for me to ask questions. I heard back around a week or two later.