There are several ways to update your Mac OS X software and operating system.
VCSU assigned MacBooks should be enrolled on Jamf to keep computers managed and updated.
Jamf is a cloud based service that Technology Services uses to help manage and provide applications to VCSU users on their Mac OS X and iOS devices.
To setup Jamf please see the following article: Self Enrolling on Jamf server and using VCSU Self Service
For additional information, please visit: How to Update Software on Your Mac