It is important that you update your computer on a regular basis to keep it secure. If you don't update your computer, you could be vulnerable to cyber attacks. Additionally, you may find that certain programs, such as Examplify, no longer work on your system because it needs the update to run.
Security updates should be run whenever they are released, usually once a month. Your system may be set to install security updates automatically.
Major system updates, such as updating macOS Ventura to Sonoma, or Windows 10 to Windows 11, should be done between semesters.
How to check your macOS version
How to check your Windows version