Your Application Your application must contain several different elements, listed here. We require letters of recommendation from science, engineering and/or math college professors, extra-curricular technical experience, your writing sample/essays, and a professional resume. None of the above requirements is stringent. In particular, a low GPA can be offset by recent improvement in grades and a good letter of recommendation from a professor who knows the student well. While your experiences are important in our admissions process, they are much more important when you get accepted and we are trying to find an appropriate assignment for you. For those of you who have attended the program before, there is no particular premium on having been here, but the fact that we know you and what you can do is probably helpful. We generally do not accept students for a third year. See also: How To Apply The Deadline for applying Criteria for applying Tips for writing a good application Your Application Your Job as an intern Learn more about SIST in one of our Webinars!