问题
I am a teacher trying to access guardian emails through the Classroom API to send out periodic progress reports and warnings. It appears that guardian email addresses are only available to domain administrators. Is this true?
回答1:
Yes, here is the documentation that answers your question.
Who can manage guardians
The following table describes the actions that can be performed with respect to guardians, according to the type of user currently authenticated:
See the note:
Guardian's email addresses are accessible only by domain admins.
来源：https://stackoverflow.com/questions/46259829/accessing-classroom-guardian-email-addresses