
Each weekday morning, just after 7 a.m., Kathryn Sellers runs through a list of five phone numbers. They belong to parents at Pittsburgh Arlington, a nearby pre-K-8 public school.
Sellers, who has been awake since 5:30 a.m., brings a cheerful start to each family's day, even over voicemail. She wishes each one a great day, adding, "I love you" before hanging up.