Materials archive from ALI Assessment Committee Events. This is intended to be the sharing location for materials hosted on other sites, like YouTube, institutional repositories, and their like.
This is an excellent blog post that explains the process of determining sample size. There is also an ebook available for download that goes into further detail.
A good article that discusses not only the sample size you need, but also how many people a survey will need to be sent to in order to get those results.
Are you looking at the entire population, or just a sample?
Would looking at a cohort make more sense for your study?
A cohort is a single group followed from one fixed point in time to another fixed point in time. Example: Looking at a group of students when they are freshmen, then looking at them again when they are seniors.