The use of tablets has become more commonplace in academic environments. School cases are designed for students. In general, most tablet cases in this fashion are targeted for high-school and college students. Others are designed for grade-school aged students.
For college students, functionality is crucial. Many school cases include a keyboard for note-taking during lectures. Any good models, particularly those for iPad with the auto sleep/wake function, include quick access to the tablet.
As many college students carry tablets instead of a laptop, weight is also important. All the necessary functionality must be provided in a trim enough style to fit an average-sized book bag or backpack. Alongside those old-school textbooks and notebooks.
Folios and bookcases are particularly common among student cases, again due to the need for tote-ability. One final advantage in school tablet cases is that they are usually low-priced to meet student budgets.