Yes, the functionality you have described is supported if you are using Brightspace for Parents & Guardians. See
In short, after enabling the tool, you need to create a relationship between the Parent/Guardian and the Learner. In doing this, from a course offering, Teachers via the Classlist can email the Learners parent/guardian and add the learner to the email recipient list.
Please reach out to the D2L Support team or Customer Success Manager who can assist in getting the tools enabled/configured in your Brightspace environment.
Hope that helps!