https://github.com/kuwaitcodes/ios-cw-4/blob/52bff4a7483aa575cc9e5cc3529df44279abe67d/iOS_Classwork_Extra/iOS_Classwork_Extra/Classwork/Student.swift#L24
- mark 2 should be combined with mark 1 cause it's part of the struct without any space (it could confuse the students)
- a bonus is they could add a default image if the student didn’t have one (if the image is "" (empty string))