Computer checkup/maintenance. You forgot to mention windows updates, it is critical to perform that action as well cause of the recent ransomeware malware that is going around lately and Microsoft and other OS vendors yes even Apple have released patches to prevent it spreading even further.
The student who uses macros for long words. They are most likely to pass words very easily because they have a macro. While not only saving time, also making a stunning performance as macros usually auto correct as well.