Johns Hopkins University | WYPR

Johns Hopkins University

At 7:30 a.m. Monday through Friday, you'll find Mark Gaither standing on Gough Street in southeast Baltimore. He's outside Wolfe Street Academy, the neighborhood elementary school where he's the principal.

Gaither has a huge umbrella in case it rains, and thick gloves for when it snows. He's here each morning to greet students and families as they come to school — which should make for at least 225 "good mornings."