The District has changed our website from School Fusion to School Messenger. Parents will access the site using their Parent Portal account information (Password must be all in lower case)
Here is a link to some information that will help you better understand

All students have been given Microsoft Office 365 accounts.  These accounts will be used to access the schools networked computers as well as their accounts on the new website School Messenger.  
Here is a link to the Microsoft and Google Support

School Messenger - A Student View