Screenings Due refers to the screening tasks that have been scheduled, but the materials have not yet been sent to the caregiver for completion. Screening that are due are 'completed' once you generate the corresponding packet to mail or hand to a caregiver. 

Screenings Out refers to the screening tasks in which the materials have been sent to the caregiver for completion, but have not yet been returned to your program. 

These two sections help you keep track of children who are due for a screening but still need the materials sent to caregivers and keep track of children whose caregivers have been sent the screening materials but have not yet returned them to your program. 

To learn more about these sections, go to https://www.asqonline.com/help/default.htm?7_3_screenings.htm