Hi @Samir Almousawi ,
Generally this is a sync question and the default sync method provided by Microsoft is SDS(School Data Sync).
See this document for Weekly guardian email digest:
https://learn.microsoft.com/en-us/microsoftteams/expand-teams-across-your-org/assignments-in-teams#weekly-guardian-email-digest
I don't understand about the "back end student system" but please kindly understand that this is the best idea to associate students and their parents.
Best regards,
Lou
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