No need to create a new account with a different email! This would actually duplicate your account and create more trouble both for you and your School Admins.
Instead, all you have to do to update a new email is:
Log in to CampusGroups
Click on Profile in the top right corner, and click on Edit Profile
3. Click the Basics category
4. Enter the email of your choice in the Email field
5. Click on the Save button at the bottom of the page.
Please contact firstname.lastname@example.org with any questions.