The essay is about the origin of the number 7 and where it came from, the essay is also about how it’s used in different places other than math, like how the number 7 shows up in the Bible a lot and is referenced to spiritual things. There also needs to be a bibliography.
All applicants go through a series of tests that check their level of English and knowledge of formatting styles. The applicant is also required to present a sample of writing to the Evaluation Department. If you wish to find out more about the procedure, check out the whole process.