Keeping your children's details (like their school and grade) up-to-date helps Peggy sort items for them intelligently.
Switch to My Family menu.
Tap "Add to Family"
Select the Kid tab at the top of the screen.
Fill in their name and school details.
Tap Save to save the kid details
To edit an existing child: Simply tap on their name in the list to open the editing screen. Make your changes and tap Save.