Are release conditions reevaluated for a student in Intelligent Agents? In Announcement release c...

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Are release conditions reevaluated for a student in Intelligent Agents? In Announcement release conditions?
 

To send a communication to students who have NOT attempted a quiz, and to stop ending it after the "not" condition is no longer met:

Does the IA tool re-evaluate the condition each time it sends? Or if met once, is it always met?

It seems that the release condition applied to an Announcement get re-evaluated each time the student reloads the course home page. Does anyone know of an exception where, once the condition is met, it remains met?