The Portal Notes page is an announcement feature for the admin so as to communicate messages to the other users like teachers, parents and students; the message will display on the homepage of the user’s portal.
To access this page, go to School Setup >> Portal Notes.
You can make the text appear for a certain period of time by selecting begin and end dates. You can also control who gets to see the message by clicking on the Visible to options.
For example, if you want only parents to view the message, click Visible to Parent.