Typical places to keep exam papers include strong, non-portable safes, a metal cabinet with full length external locking bars, a room solely dedicated to storing exams or hidden in walls or ceilings. Exam paper storage should be heat and flame resistant, crack-resistant locks and be able to withstand break-ins.
The main reason to store exam papers in a secure location includes restricting access to students. Students with access to exams before the exam date may use it as a way to cheat. This is especially important for exams that are used multiple times in a row, as this practice extends the time students have to try to obtain a copy.