Can I mass delete information that is filled in under a Family's User-defined fields?

Yes, you can mass delete the User-defined fields (UDF) for ALL Families at once from the Families menu > Clear UDF Answers

User Permissions

The User ID must have this permission under Families to process a mass delete: 

  • Clear Family User Defined Fields and Family/Student Fixed Fees and Discounts (Class-based billing only)