If a college provides Gmail accounts through G Suite for Education, can the college's administrators monitor users' emails?
Data access by your administrator or service provider
And in the G Suite Administrator Help:
Which of my users can access other users' accounts?
Information we share
If your Google Account is managed for you by a domain administrator (for example, for G Suite users) then your domain administrator and resellers who provide user support to your organization will have access to your Google Account information (including your email and other data).
Doesn't really matter which version of G Suite you are using, the administrator(s) will be able to access (and read) your emails.